Thirteen piece Kit contains a miniature ratchet plus the following Allen hex type adapters (Size dist across flats): .050″, 1/16″,5/64″, 3/32″, 7/64″, 1/8″, 9/64″, 5/32″, 3/16″, 7/32″,1/4″, new spinner top, in plastic pouch. Our famous midget ratchet is hand assembled & inspected. It provides roughly the leverage of 4 large screwdrivers in a small space with an 18 degree working arc. Our insert bits are milled from USA tool steel in Durham CT, and feature a ball detent, “ear” stops, a knurled end and are stamped with the part #. They are non-magnetic which allows you to work on electronics. This kit is great for working on anything with standard Allen Hex screws including industrial equipment, road & mountain bikes, appliances, general household use, aerospace and military applications. Chapman tools are American made from USA materials and are hand assembled and inspected.