MOTO-D Stainless Steel (304 series) Motorcycle Spring Clip Racing Safety Pins are quick-release safety wire clips for use on motorcycles, go-karts, boats and race cars. Save yourself the trouble of re-safety wiring parts by using these spring clips. Size S (38mm length x 13mm height) typically used on brake caliper bolts and other small bolts. The thickness of the wire is 1.1mm. Total Spring Clips 25.  Â