6 pieces Hook Pin Wrench Spanner Tool Kit for Motorcycle Bike Nut AdjustmentApplication To Adjust Collars, Lock Nut Rings And Bearings. For Use On Slotted Retaining Rings Found On Motorcycle Suspensions, Dirt bike, HVAC Chiller Equipment And On Other Machinery Specification Material Chrome Vanadium Steel Hook Depth (mm): 2. 8, 3, 4 Hook Thickness (mm): 5, 10, 12 Span Diameter (mm): 35 60, 60 90, 90 120 Pin Sizes (diameter x length mm): 7. 9 x 8, 6 x 3. 8, 6 x 7. 9, 5 x4, 4 x 4 Package Include: 3x Hook Spanners 3x Pin Adaptors