Tapered Threadless Headset

    Specification:
◎ ZS44/28.6∣ZS56/40 
◎ Alloy, Sealed Bearings 
◎ TOP NUT: 1 1/8"
◎ CUP O.D.: 44/56
◎ CROWN CONE: 39.8
◎ Height: 12.5mm
◎ ACB Upper-36° x 45°; Lower-45° x 45°