Shimano GRX FC-RX820 1x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110 BCD Asymmetric Shimano - 172.5mm - Black - 42T - 49.7mm Chainline YGroup_7033450823725 Use a soft jawed vice

Use a soft jawed vice to compress the domes on the crush washers by tightening the vice until the jaws hit the pin

• Micro-fleece textile collar lining for comfort

sweat-absorbent foam pads help keep your head cool and provide that perfect fit

Unless you're pulling these off while in mid-air over a 40 foot double you'll most likely be able to put them in your pocket rather than leaving them lying around in the bush

Shimano GRX FC-RX820 1x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110 BCD Asymmetric Shimano - 172.5mm - Black - 42T - 49.7mm Chainline YGroup_7033450823725 Use a soft jawed viceThe SHIMANO FC RX820 1 crank balances weight savings, optimized efficiency and an array of gearing options that cater to the segmented demands of mixed terrain riding. By pairing a 10 45T or 10 51T cassette with 40T and 42T chainrings, riders can choose closer gear steps or ultimate range. The FC RX820 1 comes in 170, 172. 5, and 175 mm crank arm lengths, providing an additional level of customization.