Our very popular Angle Drill Kit includes the A601 Angle Drill Attachment plus 4 threaded drill bits in sizes #40, #30, #21, and #10. The specifications of the angle drill attachment is: 1" head length; 3/8" side to center distance; accepts 1/4-28 threaded bits with a 1/4" drill capacity; overall length is 7". 1 lbs (0.5Kg) shipping weight.