Panda Software SENQI Bike Stem Handlebar Fork Threadless Stem Adapter 22.2-25.4mm 22.2 is needed for your 1" steel fork for classic aluminum build; Material: AL6061-T6 aluminum with a chromoly bolt; Size: small head: 22.2mm, big head: 28.6mm; 22.2mm stem is suitable for the 25.4mm outer diameter fork steere; Process: 3D forging.