Odyssey's resident tech wizard & kick-flipping pro Matt Nordstrom now has his own signature stem. Odyssey worked closely with Matt to dial this in for his needs. 6061-T6 aluminum, CNC machined with special surface contouring & a larger bolt head spec for superior handlebar grip. Six bolt clamping configuration & headset pre-load bolt recess (32mm diameter). section Product Specs TYPE: Top Load REACH: 45mm RISE: 30mm CLAMPING DIAMETER: 22.2mm WEIGHT: 12.5 oz