Ring Auger Bits

The rounded single spur of these bits cut a clean edge of the hole and the chisel-like cutting edge turns around the threaded center and removes chip by chip within the previously cut circle. The thread of the center is large and strong enough to bite into the wood and pulls the bit. You do not have to use any pressure. This bit with large threaded center is unsuitable for power drills. For softwood and European hardwoods such as oak, beech, cherry. All measurements in mm, imperial only approximately!

Diameter mm	Diameter inch	Total length	Spiral length	Cutting length	CodePrice
6	7/32	410	160	190	Code 312220Price ∗ € 14.00
8	5/16	460	190	410	Code 312221Price ∗ € 15.00
10	3/8	500	220	460	Code 312223Price ∗ € 16.00
12		520	230	470	Code 312225Price ∗ € 17.00
13	1/2	520	230	470	Code 312226Price ∗ € 17.00
Diameter	Diameter	Total length	Spiral length	Cutting length	CodePrice
35		600	310	520	Code 312241Price ∗ € 59.00
38	1-1/2	600	310	520	Code 312243Price ∗ € 69.00