Excel Abrasives supplies Swivel Type Diamond Glass Drill. Excel Abrasives manufactures industrial diamond products. Swivel Type Diamond Glass Drill is designed for high precision and high yield production drilling application especially on glass. Swivel Type Diamond Glass Drill has the water swivel adaptors which are specially designed to fit all popular brand electric drill. Diamond plated solid thin drills have faster drilling action with minimum heat generation. To achieve optimum performance, use water swivel adapter. It helps the drill last up to longer minimum deformation and cracks associated with heat generation. These are available in standard and custom size.