Ridgid 7038 7/16-Inch Quick Hole Saw Change Mandrel This item is SAW, HOLE 7/16" QCK CH MNDRL 27828 This product is used for handsaws This product manufacture by China Fits bi-metal bole saws 1 1/4-Inch - 6-Inch 7/16-Inch hex shank Pin drive Positive lock Maximum Cut Depth @ 90 Deg.: 0-Inch