Professional set of heads, bits and accessories 1/4" consists of 48 items in metal case. Included in the kit head with a hex socket will help in tightening/loosening screws, screws or screws with hexagonal profile; have a great working resource and can withstand high dynamic loads, so widely used in the workshops. Elongated head from a set of plumbing tools AmPro apply for a job with the intricate details elongated or deep forms, and supporting fasteners in tight areas.