Description of Efficient Cutting Power: Jancy Slugger Uncoated Diameter Cutter
Offers increased productivity with efficient use of drill power. High-speed steel (HSS), for use on a wide variety of materials. 1/4”-depth cut for thin material or confined spaces. Uncoated (bright) coating for use on a broad range of materials. Requires an arbor for a secure holding in the drill. Maximum cut depth: 1/4 inches.
Excellent cutters. I have a few different sets and bought this one to replace a broken one. I used a drill and I have a squint and it broke the original. All my fault.
For me they were good knives but they are limited in terms of the thickness of the material to be cut. I haven't been able to cut the tube with them, it seems the intermittent cut kills them.