This is a Bondhus Prohold Tip Ball End Hex Driver with a size of .050 inches, made in the USA. It is designed for hobbyists working with bolts in the RC model vehicle industry. The screwdriver is suitable for individuals aged 12 years and above, and is known for its high quality and precision craftsmanship. This tool is ideal for anyone in the hobbyist community who values reliable and durable equipment for their projects. Visit hobbybolts.com