Normal concave/convex pliers tend to nick precious metal wire during wrapping. The Master Coiler allows the user to hold wire with the flat jaw while rotating the round jaw to form the perfect loop or coil. Great for making jump rings. Non-rust highly polished stainless steel construction with comfort grips. The stepped jaw has three diameters: 2.1, 3.2, 4.4 mm. Overall length 5 3/4". Made in Pakistan.