Our Waverly Bone Bridge Pins are lathe-turned, with vintage style. These are high quality, old-style lathe-turned bridge pins in genuine bone. Bridge pin specs: Overall length: 1.25" (31.75mm) Widest diameter (above collar): .320" (8.13mm) Shaft length: 1" (25.40mm) Shaft taper: 5-degree taper Shaft diameter just under collar: .220" (5.59mm) Shaft diameter at bottom of pin: .133" (3.38mm) String slot width: .070" (1.79mm) Sold in sets of 6.