Hayes Venom Mineral Oil Bicycle Brake Pro Bleed Kit - 98-30986 Bleed fittings for Hayes Venom mineral oil brakes Includes 2oz of high performance Hayes Venom mineral oil Quick connect fittings and dual syringes for an efficient, precise bleed Reusable plastic container with locking lid Hayes Pro bleed kits include dual syringes and high quality fittings for precise, repeatable bleeds.