Centerlock rotors come with a special Shimano TL-LR10, a tool you use to attach these rotors. If you have a similar lock ring for your cassette, 

SHIMANO XT SM-RT86 Rotor - 6-Bolt. Installation was straight forward, and the end result was perfect. After bedding in, it's great, no rub and it seems perfect, recommended. Read more. Report abuse. Muttley. 4.0 out of 5 stars Missing fixings. Reviewed in the United Kingdom on March 19, 2021.

This is the Shimano SM-RTAD05 6-bolt rotor to Center Lock hub disc adapter. Using the proven Centre Lock lockring fixing system for quick and easy installation this adapter neatly adapts your 6-bolt rotors to fit on to Centre-Lock hubs. The adapter also features a reliable anti-loosen plate for secure braking in all riding conditions.

SHIMANO's SM-RT56 6-bolt disc brake rotors deliver consistent stopping power in all riding conditions. A new tightening plate construction makes for quick and secure installation. FEATURES Quicker installation -New tightening plate construction for easy and quick set up Designed for resin pad only 160 mm, 180 mm FIND A DEALER

Use the SM-RT86 brake rotors with XTR, XT, Saint, SLX, Deore and many other Shimano disc brakes. Technical Information: Mount: 6-bolt; Diameter: 160 mm, 180 mm, 

The Shimano SM-RT66 ZEE / SLX Disc Rotor, 6 Bolt, 160mm, boasts precision cut and drilled stainless steel braking surfaces for improved pad clearing in muddy conditions. Also, it aids cooling under high load. Plus, it just looks pretty funky. Precision cut and drilled stainless steel braking surface for improved pad clearing in muddy conditions

Anti-loosening washers make for quick and secure installation. Suitable for metal- and resin pads. The cool one: the Shimano XT Disc Rotor SM-RT86. The ICE 

A large forged alloy spider on the Shimano XT RT76 6-Bolt Rotor supports its surface and works to decrease overall weight increase rigidity. Reasons to Buy: Get the best performance from your brake. Prolong your brake pad life. Reduced heat build up. Superior braking in muddy conditions. Features: Material: Stainless Steel and Forged Alloy; Mount: 6-Bolt; Compatibility: All

From reading the instructions I assume they go between the rotor and the bolt. Then your supposed to "use a flat-tipped screwdriver or similar 

Shimano's Centerlock to 6-Bolt Disc Rotor Adapter is a pretty straightforward article. It slides onto the centerlock mount on your hubs, leaving an interface to mount a six-bolt rotor. It includes a six-bolt washer, a lockring, and a circle clip to secure the conversion, and a standard Shimano lockring tool is all you need to install it.

The Center-Lock Rotor Adapter was developed specifically to adapt Center. Lock-splined disc brake hubs for use with 165mm diameter or smaller standard. 6-bolt