The oversized version of the BSD Levelled stem, beefs up the size and thanks to BSD's Gorilla Grip system now having a larger 25.4mm oversized clamping diameter you've got a much tighter hold on your bars. That increase in clamping area size adds 14% more surface area in contact than a regular stem, meaning your bars are a lot less likely to slip when you're flying down a 12 set. ###section### Product Specs TYPE: Top Load REACH: 50mm RISE: 27mm CLAMPING DIAMETER: 25.4mm WEIGHT: 320g (11.32oz) Colour: Polished, Black