DURABLE MATERIAL- Using only the highly hardened plate steel. This quality handy ring roller is a perfect choice for producing chandeliers, plant holders, and candle holders. FINE ADJUSTMENT- It has fine adjustment for the top roll and to power this ring rolle.It suits for etal artists, technical schools, and home shops. 13-1 / 2'' LONG HANDLE- The manual benders handle length is 13-1/2''. Power arm is long enough,the operation is with no difficulty. MINIMUM RING DIAMETER 3''- The bender is designed to make metal rings from 3 inch diameter and larger. It makes precise bending small rod up to 1/4-inches easy. INSTANT SETUP- Can easily be bench or pedestal mounted, and also it is easy carry and easy operation.