KOGEL PRELOAD KIT 30mm SPINDLE SPACER RING/THREAD RING/2.5mm HEX BOLT GOLDPodium grade crankset preload adjuster made from aluminum with Grade 5 titanium hardware Available for 30mm and DUB crank spindles like those from SRAM, Race Face and Easton and includes the spacer ring, thread ring, and a 2. 5mm hex bolt Threads onto the crank arm and backs off to remove play Constructed for guaranteed performance and durability