Tange Seiki DX 4 Threadless headset

DX4 Lightweight and strong duraluminum light alloy construction. Colors: Black, Blue, Red, Gold, or Silver Fully Sealed Mechanism Material Height Information Top Cover A6061-T6 Light Alloy 4.6mm ID 28.8mm Compression Ring Nylon Plastic 6.5mm ID 28.6mm Top Cone SS41 Steel 5.3mm ID 30.0mm Upper Stationary Cup A6061-T6 Light Alloy 19.8mm Insertion 34.0 +0.1 -0/ 10mm depth Lower Stationary Cup A6061-T6 Light Alloy 19.8mm Insertion 34.0 +0.1 -0/ 10mm depth Crown Cone SS41 Steel 6.2mm Insertion 30.0 +0 -0.1 Lower Seal Ring Nylon Plastic 3.0mm Ball Retainer x 2 Chorome Balls Steel #800 5/32"x 22 Balls