The telescoping drill clamp fits drills and impact drivers large and small-including newer lithium-ion models. The recent redesign allows the tool to rotate 360-degrees and lock into position. The adjustment wrench now stores with the tool, preventing loss. The hex shank drive shaft attaches directly into the chuck of any drill or impact driver. The TSF2 makes cuts in 1/2" (13 mm) backer board and will also cut 5/16” fiber cement siding. Use this to make straight minimum dust cuts and arcs with the capability to navigate curves for window and door arcs! The blades are made of treated high carbon steel and feature a reversible skid plate to assure long service life. Replacement blade and skid plate TSF2RB