QUICK CHANGE DISC PLASTIC BUTTON Raw material : DuPont ST 801 Mainly for the production of quick change discs Dupont nylon 801 material for fast conversion of sand dishes. TYPE DIA(MM) REMARK R 16/19/30 Small size is for 1 inch disc ,  Medium size is for 1.5 inch disc, Large size is for 2 &3 inch disc. S 19/24/30 P 19/23/30 QUICK CHANGE DISC METAL BUTTON Raw material : Angle iron Mainly for the production of quick change discs SIZE DIA(MM) TYPE SMALL 19/22 S MEDIUM 29 S LARGE 38 S INSERT RUBBER 24 S INSERT RUBBER 32 S