Features: Fit for most motorcycle brake calipers, brake clutch masters. Not easy to glide: motorcycle hollow screws have good performance, threads are clean and do not glide easily. Each component is precision-machined to exact tolerances for trouble-free performance. Long lasting durability. Just rotate fitting to properly install in place. Please allow 1-2mm differences due to manual measurement. Specification: Color: Silver Tone, Purple Copper Tone Material: Metal Washer Inner Diameter: 20mm / 0.79"(D) Washer Outer Diameter: 25.8mm / 1.02"(D) Screw Size: 47x31mm / 1.85"x1.22"(L*W) Thread Size: M20x1.5 Package Includes: 4 Pcs Motorcycle Hollow Bolt Screw 8 Pcs Washers