MAKELEN 25.4mm External Cup Threaded Headsets for for 25.4mm (1") Front Fork Steerer, 30mm Head Tube and 22.2mm Handlebar Stem Lightweight Headset Black

Measure your front fork steerer external diameter and select size: 25.4mm (1 inch) OR 28.6mm (1-1/8), Measure your handlebar stem external diameter and select size: 22.2mm (7/8 inch) OR 25.4mm (1 inch)., Measure your head tube inner diameter and select size: 30mm (1-3/16 inch) OR 34mm (1-5/16 inch)., Smooth, lightweight and durable headset, is suitable for MTB, ATB, cruiser bike, city bike., Material: high-quality steel forged, all set steel with seals, strong and durable, save money and worry.