Skip to content
Contact Us Jewelry School Partners Frequently Asked Questions Submit Tax Exemption
Ruby Crystal Points - Otto Frei
Ruby Crystal Points - Otto Frei
Ruby Crystal Points - Otto Frei
Ruby Crystal Points - Otto Frei
Otto Frei

Ruby Crystal Points

Part # 111.503 5 In Stock Weight -- lb / -- g
$10.95

Pack Size Options

Sold in packs. See Product Description for quantity.

Shape: #3 Cone 2.75mm

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
California Prop 65 Warning California Prop 65 Warning:
Cancer and Reproductive Harm. www.P65warnings.ca.gov.
Brand
Otto Frei
Part #
111.503
Type
Polishing Wheels & Bobs
Country of Origin
United States
Dimensions
2 in x 1 in x 0.5 in
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