[with Brass Collet Chuck] The hand drill file handle has brass collet chuck, knurled nut for quick file change [Comfortable Grip] This wood file handle utilizes craftsmanship, ergonomic shapes and smooth surfaces for a beautiful look and comfortable grip [Natural Redwood] This wood file handle is made of dense grain hardwood file handle, not afraid of handle cracking, made of natural redwood, each one has a texture [Size Information] The hand drill file handle has a hole diameter of 3.6mm, hole depth of 80mm, hole is flat and centered [Wide Application] The hand drill file handle is suitable for small files, such as needle files, chain saw files, small files, which can be used for woodworking, joinery, metal, jewelry, model engineering, Manufacturer: Akfldms