Matt Nordstrom signature stem Special surface contouring and a larger bolt head spec for superior handlebar grip Six bolt clamping configuration Headset pre-load bolt recess (32mm diameter) 6061-T6 aluminum, CNC machined 30mm rise from bottom of stem BMX 1-1/8` 45 22.2 0? Black AL6061-T6UPC/EAN/GTIN: 630950919925