High-Quality 12-Speed Chain Tool with Replaceable Plunger Pin Designed for single and multi-speed bicycle chains up to 12-speed, including Campagnolo® hollow pin chains, this durable chain tool features hardened steel construction for long-lasting performance. It comes with a convenient chain hook to hold links securely during assembly and offers dedicated storage space for the included chain hook and a spare plunger pin. The replaceable plunger pin ensures easy maintenance and extended tool life. Compatible with Campagnolo® 12-speed hollow pin chains Includes chain hook for easy link handling Spare plunger pin for quick replacement Hardened steel construction for durability Integrated storage for tool accessories