The BSD Stacked Stem is now oversized to work with oversized handlebars. That increased 25.4mm clamping area adds 14% more surface area to give a better hold on your bars. CNC machined from 6061-T6 alloy for maximum strength and then internally machined to shave off some extra grams, it's the perfect balance between strength and weight. ###section### Product Specs TYPE: Top Load REACH: 50mm RISE: 33mm CLAMPING DIAMETER: 25.4mm WEIGHT: 312g (112oz) Colour: Black, Polished