This handy pocket-sized tool from Toysmith is a Top-10 bestseller due to its fun and functional nature. Each Key Chain Tape Measure is small and compact, fitting easily in jacket or pants pockets, and it clips onto belt loops and backpacks and can measure both metric and standard. This miniature tape measure also features a lock button and a 0.25-inch-wide blade. A handy pocket-sized tool for any adult or handyman, or a fun gift to give to a little builder who loves to tinker.