Specs of carbide Reamer: 20*30 degrees, 23*30 degrees, 22*58 degrees, 22*45 degrees, 27*45 degrees, 26*30 degrees, 24*58 degrees, 24*45 degrees, 31*45 degrees, 31*58 degrees, 30 * 30 degrees.Grinding head specifications: 21*45 degrees, 24*45 degrees, 26*45 degrees, 30*45 degrees.Shaft Size: 5.5mm and 5mm