♥Spec Name: Retaining Pins R Clips Material: Stainless Steel Spring Weight: 526g ♥ How to use After tightening the nut, insert the cotter pins into the nut slot and hole. the end of the bolt: pull the tail of the cotter pin to prevent the nut and bolt from turning against each other. the other. ♥Package Contents 42 Cotter Pins 3/32" x 1-3/16" 30 Cotter Pins 5/64" x 1-5/16" 25 Cotter Pins 5/64"x1-9/ 16" 25 x 7 /64"x1- 5/8" keys 20 x 9/64"x1- 3/4" keys 8 x 5/32"x2 - 15/16" keys