[WHAT YOU GET] 1 x 5.5Inch wire looping mandrel(large), 1 x 5.5Inch wire looping mandrel(Small), 1 x extra 4Inch wire looping mandrel. [LARGE SIZE] Diameter:6mm/0.236Inch 7mm/0.275Inch 8mm/0.315Inch 9mm/0.354Inch 10mm/0.394Inch. Made of stainless steel for your long lasting use. The PVC handles for anti-slip and comfort grip. [SMALL SIZE] Diameter:1.5mm/0.059Inch 2mm/0.079Inch 3mm/0.118Inch 4mm/0.157Inch 5mm/0.197Inch. Made of stainless steel for your long lasting use. The PVC handles for anti-slip and comfort grip. [EXTRA MANDREL] Diameter:1.5mm/0.059Inch 2mm/0.079Inch 2.5mm/0.098Inch 3mm/0.118Inch 3.5mm/0.138Inch. Made of stainless steel for your long lasting use. Clear marks for your convenient identification. [APPLICATION] Work fine on wire forming,wire loops,jump ring making. earring making andand other DIY jewelry crafts.With rounded and smooth not scratch the items. Color:Black Material:Metal Package Contents: 3 * ring mandrel Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.