Works Components 1.5Adeg angle-adjust headset with EC44 upper and ZS56 lower cups for tapered steerer tubes. CNC-machined in the UK from 6082-T6 aluminum with sealed bearings. Allows + or - geometry adjustment. Fits frames with 44mm upper and 56mm lower internal head tubes. Tapered steerer tube compatible (1 1/8" to 1 1/2") or with 1 1/8" fork with a reducer crown race. Ideal for trail, enduro, and downhill bikes. Works Components Angled Headsets Explained Adjusts the bike&&';;s head tube angle by 1.5 degree Due to angled nature, headsets are head tube length specific. This headset suits head tubes between 100mm 109mm in length Precision CNC-machined from 6082-T6 aluminum and anodized in the UK Includes top-cap, star nut, bearings and crown race table{border-collapse:collapse;width:100%;}td{text-align: left;padding: 8px;font-weight:350;}tr:nth-child(even){background-color:#f2f2f2}th{background-color:#eb212e;color:white;text-align:left;padding:8px;}.desc ul{font-size:24px;font-weight:600;margin-left:-25px;padding-top:35px;border-top:3px solid #f0f0f0;}.desc li{list-style:none;border-bottom:4px solid #eb212e;width:142px;} TECH SPECS Model 1.5 Degree Angle Headset S.H.I.S. EC44/28.6 / ZS56/40 Stack 16mm/2.5mm Angle 1.5Adeg Headtube Length 100-109mm Headtube Internal Diameter Upper: 44mm (EC44) / Lower: 56mm (ZS56) Cup Insertion Depth Upper: 9mm / Lower: 11.5mm Color Black