Ruby Crystal Points are fast-cutting, tough abrasive points and cones engineered for accurate grinding across a wide range of materials — including steel, porcelain, glass, soft metals, and precious metals. Each shape is securely mounted on a 3/32" (2.4 mm) mandrel for reliable, centered rotation in standard rotary handpieces. With 18 shapes available, jewelers and metalsmiths can select the precise geometry needed for reaching tight areas, shaping prongs, cleaning up castings, or refining surfaces with control and efficiency. Features Fast-cutting ruby crystal abrasive construction for aggressive material removal Suitable for steel, porcelain, glass, soft metals, and precious metals Shapes securely mounted on 3/32" (2.4 mm) mandrels 18 distinct shapes available — cylinders, cones, flames, knife edges, inverted cones, and rounds Sold in packs of 3 per shape Specifications Mandrel Shank 3/32" (2.4 mm) Pack Quantity 3 pieces per shape Shapes Available 18 Material Compatibility Steel, porcelain, glass, soft metals, precious metals Available Options Part # Shape Dimensions 111.502 #2 Cylinder 2.55 mm x 6.9 mm 111.503 #3 Cone 2.75 mm 111.504 #4 Cylinder 2.4 mm x 7.5 mm 111.507 #7 Flame 3.8 mm x 5.6 mm 111.508 #8 Knife Square End 4.77 mm 111.509 #9 Cone 3 mm 111.510 #10 Flame 3.5 mm x 6.8 mm 111.513 #13 Knife Square End 9.6 mm 111.518 #18 Round 5.25 mm 111.520 #20 Knife Square Edge 12.5 mm 111.521 #21 Knife Square Edge Flap Top 7.2 mm 111.522 #22 Cylinder 6.5 mm x 2.75 mm 111.524 #24 Cone 5.4 mm x 9.5 mm 111.525 #25 Inverted Cone 4.95 mm 111.526 #26 Cylinder 5 mm x 12.2 mm 111.527 #27 Cylinder 6.6 mm x 12.7 mm 111.528 #28 Cone w/ Flat Top 3.6 mm x 10 mm 111.530 #30 Cylinder 6.4 mm x 6.4 mm
