All Weather Explorer XTR Level Alloy Cartridge & Replaceable Pad - V-brake Brand: DiscoBrakes One Pair (2 pads)XTR level 72mm cartridge brake shoe set with black anodized aluminum pad holder These multi-function pads are designed with an air intake to cool them down during prolonged braking The longitudinal grooves improve wet weather performance & the tip has been designed to clear dirt Upgrade V-Brake pads complete with re-useable Cartridge Holders