Pedros Pro Chain Tool 3.2. The third edition of the Pro Chain Tool blends the efficient and ergonomic design of the Shop Chain Tool with innovations from our flagship Tutto Multi Chain Tool. Features include our patented retracting pin guide (RPG) for superior functionality and reliability peening bit and backer for installation of Campagnolo 11 12 and 13 speed chains and integrated guide pin sheet slot to quickly remove guide sections from installation pins. Replaceable bridge and new adjustable bridge positioning ensure compatibility with all current and future chains. Visit pedros.com/chainfit for compatibility info.