Bluespot Tools Sds Bit Set Of 3 450Mm3 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.