Park Tool MT-40 Multi ToolThe Park Tool MT-40 Multi Tool features a reinforced composite outer shell with forged aluminum side plates with hardened and plated tools for longevity. There are 2.5, 3, 4, 5, 6, and 8mm hex wrenches, a T25 and T30 Torx compatible driver, a CO2 Adapter, 8 and 15mm box wrenches, a 10 Speed compatible chain tool, and a combination cross/straight tip screwdriver. There is a key ring holder. Weighs only 243 grams.763477003935