Description The Tange Technoglide J27 1 1/8″ Headset is a high quality 34mm ID headset from Japanese Manufacturer Tange-Seiki. As one of our most popular parts in the workshop, you can find this headset in stock in our RICHMOND BIKE SHOP. Tange Technoglide J27 1 1/8″ Headset Specs 6061 AL cups with Tange’s 4T5 sealed cartridge bearings. Features the EZ system on the upper unit for easy assembly. Weight: 88g Stack height: 25.3mm 1 1/8″ (this is a measurement of the internal diameter of the head tube) J27 model Black finish