Bit Diameter : 7/8 IN D Chain : 4 Electric Drill Required : 61 PTS – 5/8 Through 61 PTS -1, Minimum 3/8 Drill, All BigShank, 1/2 Drill IN Material : Heat Treated Steel Material Master Number : 50366424 Overall Length : 7-5/8 IN Shank Diameter : 7/16 IN Shank Type : Hexagonal Sub Brand : Nail Eater&#174 Twist Length : 5.000 IN Type : Extreme Shorty Weight : 0.600 LB (273.000 GM)