Chop Saw BMX headset lock for 1" threaded forks. * Color: RED ANODIZED * Material: T6-6061 aluminum alloy * Size: 1" X 24T threaded forks (fits most any 1" threaded fork.... BMX, vintage road bike, muscle bike, old school MTB, etc.) * Dimensions: 44.45mm O.D. X 12.88mm thick * Wrench size: 3/16" allen (DO NOT USE A METRIC WRENCH) * Reversible - the engraving is only one side and can either face up or down. * MADE IN USA