Triblet Mandrel 13 inch Grooved Round Collet

Product Details The triblet has a working length of 230mm (9″), with a total length of 320mm (13″) including handle. It has a diameter of 9 mm at the thinnest point of the triblet, and a diameter of 25 mm at the widest point. Used for forming or re-shaping metal. There is a groove running along the length to protect the culet/bottom of the gemstone so a ring can be tapped round with no fear of breaking the gemstone. They can be used to form a ring to a specific size, to re-size an existing ring, or to correct the shape of a misshapen ring. This solid triblet is made from hardened steel.