Washer to fix on axle Washer made out uf steel with UCP finish to fix under the axle nut to offer a assembling point for fenderstays or something else. Big Hole: 9 mm (~0,35 inches) Small hole: 5,6 mm (~0,22 inches) Perhaps you need to open up the bigger hole for another 1 mm (~0,04 inches) to fix it on rear axles. 1 Piece Total length: ~ 4 cm / ~ 1,575 inch