Quality Material: the hardwares are made of metal and the ring ball clamps are made of plastic, wear-resistant, stable, sturdy, no need worry about damage, not easy to rust, reliable and durable for a long service time.11 Sizes Included: approx 13mm x 5mm/13.5mm/14.5mm/16mm/16.5mm/17.5mm/19mm/19.5mm/20.5mm/21.5mm/22.5mm; covers almost every size of ring on the market, various types to meet your different needs. Easy to be applied and removed.Suuitable for Jewelry Making: with appearance and having exquisite workmanship, can be used to hold the ring while designing, repairing or setting; suitable for small engraving and other precision work.Wide Applications: this jewellery making tool can be used for processing, very practical and professional; for industrial, home and personal application; special designed for engravers and craftsmen.Specification:Quantity: 1 setMaterial: plasticColor: blackSize:tool: 2.28x1.65x0.98 inch(58x42x25mm), hole: 0.26 inch(6.5mm), 1pc;wrench: 3.62x0.71x0.35 inch(92x18x9mm), 1pc;column: 0.20x0.53 inch(5x13.5mm), inner diameter: 0.37 inch(9.5mm), 1pc;round: 0.51x0.53 inch(13x13.5mm), 1pc;round: 0.20x0.51 inch(5x13mm), inner diameter: 0.37 inch(9.5mm), 1pc;round: 0.51x0.57 inch(13x14.5mm), 1pc;round: 0.51x0.63 inch(13x16mm), 1pc;round: 0.51x0.65 inch(13x16.5mm), 1pc;round: 0.51x0.69 inch(13x17.5mm), 1pc;round: 0.51x0.75 inch(13x19mm), 1pc;round: 0.51x0.77 inch(13x19.5mm), 1pc;round: 0.51x0.81 inch(13x20.5mm), 1pc;round: 0.51x0.85 inch(13x21.5mm), 1pc;round: 0.51x0.89 inch(13x22.5mm), 1pc.Features:Wide Applications: this jewellery making tool can be used for processing, very practical and professional; for industrial, home and personal application; special designed for engravers and craftsmen.Package Contents:1 x Ring Setting Tool setOnly the above package content, other products are not included.Note: Light shooting 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.