High-Speed-Steel-Countersink-13mm-1-2in-Chubby-Faithfull-052303WF-p-The-Faithfull-High-Speed-Steel-Rosehead-Chubby-90-deg-included-angle-Countersink-For-countersinking-screw-holes-for-flush-fitting-of-screw-heads-in-mild-steel-plastics-&-non-ferrous-metals-Also-suitable-for-working-in-wood-plywood-MDF-&-other-man-made-boards-Can-be-used-in-both-h&-tools-&-power-drills-p-p-Type-Rosehead-Chubby-br-Size-13mm-1-2in-br-Shank-Diameter-6mm-1-4in-p-Faithfull