The 8-Bit Chainbreaker + Utility Knife multi-tool has four functions and can be nested with 8-Bit Pack Pliers Features a chain tool on one end and a mini utility blade on the other. The chain tool is operated by a 3mm hex L key that doubles as a tire plug insert The handles of this multitool slide open to provide storage for tire plug inserts, valve cores, and a spare mini utility blade Strong, lightweight, and designed to fit in a tool wrap, jersey pocket, or frame bag Chain tool is compatible with all chains L key has a 3mm hex on the short end and a forked tire plug insert on the long end Utility knife blade is retractable Items for internal storage are sold separately Multitools in the 8-Bit System attach to each other with magnets and short pins Tool Kit 2 includes 8Bit Tool, knife/chainbreaker, and disc brake tool