Nail Chipper Tri-Cut Auger Bits

Nail Chipper Tri-Cut Auger Bits, Typically when drilling a hole for a through bolt as used in ropes course or zip line construction, you will need to drill a hole 1/16" bigger than the bolt you are using. 5/8" bolt requires a 11/16" hole. These are all 18" long bits. 7-1/2" are available by request.