Brake Bleeder Wrench Tool-- 8mm brake oil clutch bleeder with 12 point wrench and check valve. For universal nipples use. Widely use including cars, light truck, or motorcycle brake caliper or wheel cylinders… Wrench Seal for Bleeder Valve--Easy to loosen and tighten with built-in wrench and socket. Without breaking the seal. For Bleeding Brake & Hydraulic Clutch System-- Ideal for bleeding brake and hydraulic clutch system without removing the wheels. No Dripped Design-- With the check valve design, tool won’t bleed unless pumped. Higher Quality Silicon Hose & Internal Seal-- Constructed of higher quality steel, silicon hose, and inner seal for long life and durable using.