Mandrel Holder

? Universal Mandrel Turret Holder ? Can hold a full time of tools and additionsl space for special adaptation ? A Single 3/8" Bolt with a wing nut or c- clamp holds tools firmly ? Use : Jewelers ? Material : Jewelers ? Shapes: Round Sizes : 12MM, 21MM, 23MM Square Sizes : 26mm X 37MM ? Made In India ? Diameter : 4.0"