RS PRO Counterbore M10, 89 mm x 18mm Cut Diameter, 1 Piece, Pilot Diameter: 10.5mm, Pilot Length: 11mm, Cutter Length: 19mm, Shank Type: Screwed, Shank Diameter: 10 mm, Material: HSS.
RS PRO Counterbore M12, 108 mm x 20mm Cut Diameter, 1 Piece, Pilot Diameter: 13mm, Pilot Length: 13.5mm, Cutter Length: 25.5mm, Shank Type: Screwed, Shank Diameter: 12 mm, Material: HSS.