T1 Stems are CNC machined from 2014 aircraft grade T6 alloy- the best available and feature a 4 bolt clamp that gives a firm and secure grip on your carbon or alloy bars. We Guarantee no bar slippage!You'll really get to see the benefits of the SAS (Speed Align System) with the stem as it allows accurate bar angle adjustment. The Choice of Nicolas Vouilloz, Lapierre E enduro team and Theory Enduro.Key Features:33mm/45mm stem lengthsTAG SAS (Speed Align System)TAG Speed Adjust bar markingsCNC machined 2014 T6 Alloy2 opposing steerer clamp bolts4 bolt bar clampAvailable in 31.8mm & 35mm clamp sizeSizes & Weights:35mm and 45mm lengths - Weight: 166g (31.8/33) | 222g (31.8/45)35mm and 45mm lengths - Weight: 181g (35/35) | 221g (35/45)