Check the listing for details. 1/4 Inch 2 Pcs Diamond Grinder Bit Head Tools, Gold Tone MCBL58. Condition: New. Listed at 27.92 USD. These stained glass diamond-coated grinding tools are designed for shaping, drilling, and grinding hard materials such as stained glass, ceramic tiles, stone, and similar surfaces, fitting most glass grinder brands. Suitable for DIY enthusiasts, artisans, and professionals working with glass or stone, these bits ensure smooth, efficient grinding when used with water or coolant. SpecificationDiameter: 1.5cm/0.59inch;Height: 3.3cm/1.3inch;Color: Gold Tone;Material: Alloy;Packing List: 2 Pcs x grinding wheels, 2 Pcs x L-type wrenches.AdvantageDurable Material: Made of good-quality alloy with a diamond-plated surface (double-coated for adhesion), rust-resistant, corrosion-resistant, ensuring long service life and resistance to wear. The brass core minimizes shaft binding, preventing sticking to the grinder.