Sram muc-off tool crank preload ring

The Muc-Off Crank Preload Ring is super durable. With this ring you can accurately adjust the 'preload' on the step bearings. It helps to remove the side play and play in thru-spindle bottom bracket, to maximize the life of your bottom bracket and give you a creak-free ride. It fits the left crank arm of all mountain, gravel or road bikes with SRAM, RaceFace or Easton 30mm spindle cranks, or SRAM DUB 28.99mm spindles installed. Precisely adjusts the preload of bottom bracket bearings Eliminates sideways play in thru-spindle bottom brackets Fits SRAM/RaceFace/Easton 30mm or SRAM DUB 28.99mm spindles