SAE and Metric Set: 2-packs with both SAE (5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in., 5/32 in., 3/16 in., 7/32 in., 1/4 in.) and Metric (1.5 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm), total 17 sizes included Easy to Use and Carry: Portable folding hex key allen key set with size marking for easy identification. Comprehensive Appliance: Great for Working on bicycles, motorcycles, vehicles, machinery as repair and maintenance tool High Quality Material and Design: Internal plastic ribbing provides durability, Black-oxide finished chrome Vanadium Steel (CR-V) offers rugged strength rust resistance, Soft rubber ensures a secure and comfortable grip, prevents palm fatique, meets ANSI standard. Made in Taiwan: presents Industrial Grade Professional Tools, offers limited lifetime warranty.