This four piece set is especially designed to hold, assemble, and manufacture rings, balls, cylinders, and other round shapes. Anti-magnetic, non-rust, and measures 4-1/2" in length. Set works with the following piece sizes: 3-6 mm, 6-9 mm, 9-14 mm, and 14-22 mm. Constructed from strong and durable 14 gauge stainless steel.
