Die Grinder model DG 9107. ₹ 4,500/ Piece Get Latest Price. Warranty: 6 months. No Load Speed: 21000 rpm for DG 3050 & 35000 rpm for DG 9107. Usage/Application: used for reworking dies of metal & plastic, rust removal, sharpening blades, polishing metal, smoothi. Die Grinders model DG 3050 & DG 9107 is used for reworking dies of metal ...