Designed for the Souber lock jig, these cutters are especially designed for tubular latches, concealed door closers, deadbolts etc. They have 3 points that plunge accurately into the timber. High speed steel. Available in a range of sizes.
18 June 2018
Don't botherExactly the same problem as the other review, mine snapped in the bar, second instantly blunt, shame they can't get it right because the tool is awesome on mortice locks, stick to your 25mm spade bit for tubular latches.
7 July 2017
Badly manufactured rubbishI've bought two of these plunge cutters. The first one went blunt after three holes and the second one sheared off and left the thread in the the shaft of the jig. Ignore the video about this product it won't save you money and won't save you time!