Detailed Product Description Special designed for drilling granite or other stones. It's more aggressive and fast. High performance Use for granite, percelain engineered and natural stone surfaces 5/8-11, 1/2" Gas thread4000 RPM.The description of the product :Length :4"Diameter :3/8" ,1/2", 3/4", 1", 1/1/4", 1/3/8", 1/1/2" ,2" ,2/3/8", 2/5/8", 3", 4"