3 piece SDS Plus Masonry Drill Bit Set, manufactured to a consistently high standard with a sandblasted finish and carbide tipped. For use on concrete, masonry, lightweight block and stone.3 piece SDS Plus masonry drillbit set. Manufactured to a consistently high standard. Sandblasted finish. Carbide tipped. For use on concrete, masonry, lightweight block and stone. 1 of each 12 mm x 450 mm. 16 mm x 450 mm. 24 mm x 450 mm.Additional Information:• Diameter: Overall Length• Working Length: Pack Qty.• Mixed Set: 450mm