... , lightweight building materials and similar.Dia. 3 to 12mm (1/8"-12") 4PCS MASONRY DRILL BIT SETSPECIFICATION (mm): 4, 5, 6, 8PACKING ... ,5,6,7,8,9,10mm MASONRY DRILL BIT -- COLD ROLLEDThe body of this drill bits is cold rolled.Tip sharpened to provide maximum ... rolled in plastic boxSizes: 3, 4, 5, 6, 7, 8, 9, 10mm MASONRY DRILL BIT -- MULTI PURPOSEGround carbide tip for precise spot ...