Works with Roloc discs? A: Yes-standard 1/4"-20 thread for universal compatibility.

Q: Works with Roloc discs? Yes-standard 1/4"-20 thread for universal compatibility.

Difference vs 45102? A: 85102 adds reach; 45102 keeps discs close for open-area control.

Q: Difference vs 45102? 85102 adds reach; 45102 keeps discs close for open-area control.

Use with die grinder? A: Yes-fits die grinders, sanders, drills via 1/4" shank.

Q: Use with die grinder? Yes-fits die grinders, sanders, drills via 1/4" shank.

Performance impact? A: Rigid steel helps reduce vibration for smooth results.

Q: Performance impact? Rigid steel helps reduce vibration for smooth results.

3M 85102 Extended Shank for Roloc Discs, 1/4"-20 Thread

$4.58

Product variants

3M extended shank adapter, 1/4-20 external thread for Roloc discs

Extended Reach Adapter for Tight Space Access - 3M Steel Shank (85102, Single Unit)

Professional Disc Attachment Adapter for Confined Area Applications

This extended shank for Roloc discs solves the problem of reaching confined areas where standard mandrels come up short with extra reach, quick setup, and a 25,000 RPM maximum operating speed. The 1/4"-20 thread compatibility means you can use all your existing Roloc discs while gaining the access needed for tight engine bays, frame rails, and recessed surfaces without tool changes.

Essential for automotive technicians, fabricators, and restoration professionals who need reliable disc performance in spaces where standard tools can't fit.

Key Features & Benefits

Product Features Overview
Feature	Benefit
Extended Reach Design	Access deep engine compartments, narrow pipe interiors, and confined fabrication areas beyond standard mandrel capability—without awkward tool positioning.
Universal Roloc Compatibility	Standard 1/4"-20 external thread fits all 3M Roloc discs and accessories, simplifying setups and reducing the need for multiple adapters.
Vibration Control	Rigid steel construction helps minimize chatter at high RPM, improving finish quality and helping reduce operator fatigue.
Multi-Tool Support	Works with die grinders, disc sanders, and standard drills via a secure 1/4" shank, delivering consistent performance across platforms.

Perfect for These Applications

This Roloc disc adapter excels when you need precision in confined spaces:

Engine bay surface preparation and detailing.
Inside pipe sanding and grinding.
Auto body frame and chassis prep work.
Tight corner grinding in fabrication projects.
Recessed area cleanup in restoration work.

Technical Specifications

3M Extended Shank – Complete Specifications
Specification	Detail
Model Number	85102
Brand	3M
Thread Size	1/4"-20 (external)
Material	Steel
Compatible With	All 3M Roloc discs & accessories
Tool Compatibility	Die grinders, disc sanders, drills

Installation & Usage

Insert shank into tool chuck/collet and tighten securely.
Thread the Roloc disc onto the 1/4"-20 shaft until seated.
Verify alignment and balance before operation.

Frequently Asked Questions

Will this work with my existing Roloc discs?

Yes. The standard 1/4"-20 thread fits all 3M Roloc pads and accessories for seamless compatibility.

How does this compare to the standard 45102 shank?

The 85102 offers greater reach for tight spaces with the same thread interface. Use the standard 45102 when you want the disc closer to the tool in open areas.

Can I use this with my die grinder?

Absolutely. It works with die grinders, disc sanders, and drills using a 1/4" shank for secure mounting.

Does the extended length affect disc performance?

The rigid steel design helps control vibration and chatter, supporting smooth finishes and good disc life in confined areas.

Get Professional Results in Tight Spaces

Stop struggling with short mandrels. This extended shank gives you the access and control needed for clean, precise work where space is limited.

Add this essential adapter to your toolkit today.

About the Brand

3M

View All 3M Products

Garage Supply Guys Frequently Asked Questions

If something's not working out, just let us know. Keep in mind that some items might have a restocking fee. Check the product page for the specifics.

No worries, we've got you covered. We can send replacement parts or arrange for a new delivery. Just make sure to inspect everything when it arrives and give us a heads up right away if something's off.

All the details are at the bottom of our site under Shipping & Return Policy. You'll find everything about returns, freight damage, and any brand-specific rules.

Most larger items like car lifts and heavy equipment ship free, but depending on the brand there might be freight costs. Smaller items almost always have shipping fees via UPS, USPS, FedEx, etc. We'll show you any extra costs before you check out.

Shipping estimates are just that — estimates, and they're not guaranteed. Weather, freight delays, and carrier issues can throw things off, especially with bigger items. If you're on a tight timeline for installation, it's smart to give yourself some wiggle room.

Yep! Once it ships, we'll email you the tracking info so you can keep tabs on your delivery and plan accordingly.

We always send tracking info once your order ships. If it's been more than five business days and you haven't heard anything, just shoot us a message at support@garagesupplyguys.com or hit us up through the Contact Us page. We'll figure out what's going on.

Make sure whatever you're buying will actually fit your space. That means checking ceiling height, floor space, power requirements, and whether freight delivery can even get to your location. Trust us, it's way easier to confirm these details upfront.

Read through the product details carefully, especially for heavy or specialized items. If you're not sure about fit, shipping, installation, or anything else, just ask. We'd rather help you get it right the first time.

You'll get a confirmation email right away once you place your order. For most items like car lifts, parts, and shop tools, we'll have them shipped out within five business days if they're in stock. This goes for all major brands and replacement parts.

We don't offer installation services ourselves, but we can put you in touch with qualified installers in your area who you can work out pricing with directly. We can also handle this for you after your purchase.

Just reach out to us after your purchase and we'll connect you with trusted installers in your area. You can negotiate pricing and scheduling directly with them, or we can help coordinate the whole process for you.

Some items can be installed by experienced DIYers, but larger equipment like car lifts typically require professional installation for safety and warranty reasons. Check the product specifications and manufacturer requirements before deciding.

Yes! We're authorized dealers for all the major brands we carry. This means you get full manufacturer warranties, genuine parts, and proper support. You can always verify our dealer status directly with the manufacturer if you'd like.

It means you're getting the real deal - genuine products with full manufacturer warranties, access to official support, and the peace of mind that comes with buying from a legitimate dealer. No gray market products or void warranties here.