9/16 X 9″ Double End Boring Bar (90/45 Degree) ~ One end is 90° and one end is 45°. ~ Straight shank. ~ Tool bits are not included but are sold separately. ~ Style Number is BD-5 ~ Tool bit size is 3/16″. ~ Tool bit type is square. One end is 90° and one end is 45°. Straight shank. Tool bits are not included. Tool bits are not included but are sold separately.