Erie Tools Heavy Duty Pipe Tube Notcher 3/4" - 3" Tubing Capacity & Angles up to 50 Degrees Used for a precision made, quality, and fully functional hole saw notches Tube capacity 3/4" to 3" O.D. Angles up to 50 Degrees Large sealed Ball bearings Heavy-duty 1-1/4" thick steel frame 2-axis adjustable tube clamp Vise type clamp Double sealed needle bearings Easy mounting: Bolt or clamp it to a table or clamp it in a vise Uses standard bi-metal hole saws not included