Masonry bit : Hilt -12 x 160

A 12mm masonry drill bit from Hilt, 160mm long. Twelve millimetres is heavy fixing territory: the hole size for large expansion anchors and chemical anchors used on structural steelwork, machine beds, heavy gate posts, roller shutter tracks and racking bolted into concrete floors. A bit this wide needs a drill with real hammer energy behind it - forcing one with an underpowered machine polishes the tip, and once the carbide stops biting the hole simply stops getting deeper. Withdraw frequently to clear spoil, keep the bit square, and never lever it sideways to enlarge a hole, which is how bits at this size snap. Check the required embedment for your anchor and mark the drilling depth on the bit before you start.