Greenlee 62PTS-1 Shorty Nail Eater II Wood Boring Bit For 1" Holes Overall Length 7-5/8-Inch Twist Length 5-Inch Electric drill required 61 PTS-5/8-Inch through 61 PTS-1-Inch Shorty bits for working in tight places, yet still can go through three abutting 2 by 4s Limited service warranty