Flexcut 4 Piece Power Roughing Gouge Set features Flexcut's signature razor-sharp steel blades, specially designed for today's power carving tools to help you work less and carve more efficiently. These blades perform exceptionally well even without power, but their true potential shines when used with power tools. This set includes four wider tools i for quickly removing large amounts of waste wood. The RG series of reciprocating gouges are compatible with most reciprocating power tools and require no adapters for popular machines such as Proxxon, Foredom, Wecheer, Ryobi, and MasterCarver. The USA set contains #3 x 5/8" Sweep (RG400), #5 x 9/16" Sweep (RG401), #8 x 3/8" Sweep (RG402), and a 70 Degree x 3/8" V-Part (RG403), making it a versatile choice for power carving enthusiasts.