Semi integrated (Zero Stack) high quality aluminium headset for threadless 1 1/8" (28.6 mm) forks.Size: 1 1/8" x 44 x 30For forks with outside diameter: 28.6 mm (1 1/8")For head tubes with internal diameter: 44 mmFor fork crown outside diameter: 30 mmFor stem inside diameter: 28.6 mm (1 1/8")Ball bearings: size - 5/32", quantity - 22Top cover height: 15 mmCNC machined aluminium top coverSteel cup and crown race10 parts: crown race, 2 ball bearings, 2 cups, compression ring, upper seal, top cap, star nut, cap boltWeight: 132 gStack height: 9,9 mmPacked in a boxHeadset parts placing from the bottom: Crown race, ball bearings with balls down, lower cup, star nut, upper cup, ball bearings with balls up, seal, compression ring, top cap, cap bolt