Alloy Front Derailleur Braze-on Adapter Clamp 
 
These clamps are 100% compatible with Shimano, Sram, and Campagnolo and other front derailleurs. 
 
Anodized glossy black finish
Laser engraved logo
Material: Aluminum alloy
Fastener: Titanium Bolt
Weights (grams):
34.9mm: 24 g
31.8mm: 22 g
28.6mm: 21 g