The Box One 31.8 shifter clamp is an accessory that converts any Box shifter to be compatible with modern drop handlebars found on gravel, cyclocross, and commuter bikes. While these bikes traditionally come with clutchless 2-by drive-trains, the addition of this clamp makes the conversion to a more user-friendly and durable Prime 9 drive-train affordable and simple.

FEATURES:
– Fits All Box Shifters
– Matte Onyx Finish
– Fits 31.8 Drop Bars
– 2 Piece Hinged Design

COMPATIBILITY:
– Box One 9S Shifter
– Box Two 9S Shifter
– Box Three 9S Shifter
– Box Four 8S Shifter

SPECIFICATIONS:
– Hardware 1215 Steel
– Material Aluminum
– Compatibility Works with 7, 9, and 11 Speed Systems
– Weight 22g/0.77oz