Great White Lab Series Features: •10X increased durability and longevity with extremely hard cutting surface of 2,800 Vickers •Abrasion resistance reduces surface heat and vibration for a cooler, more consistent surface finish. •Comprehensive selection of shapes, sizes and grits, manufactured with tungsten carbide heads and stainless steel shanks. Material and Usage: Acrylic - Adjust and Contour Titanium - Light Trimming Plaster - Trim Specs: Shank: HP Head Length: 14 Head Diameter: 060 Multi-Use: Yes ISO Shape: 275 Series: Q ISO Grit: 176 HP Number: 500 104 275 176 060 Color Band: Blue/Purple Max Speed: 20,000 Pack Size: 1 Each