SRAM Bleeding Edge ToolFits S4, monoblock calipers, Guide Ultimate (B1), Guide RSC (B1), Guide RS (B1), Guide R (B1), Guide T (A1), Level Ultimate, Level TLM, and G2Bleeding Edge technology makes bleeding brakes quick and simple. An updated fluid path and bleed porting make it easier to push fluid through the caliper. A dedicated bleed adapter plugs into the bleed port and seals the system to minimize air contamination and fluid lossWorks with Avid/SRAM Pro Bleed Kits SRAM Bleeding Edge Brake Tool UPC: 710845768248