Designed for high production tapping with high-speed steel taps. Features include: automatic reverse and pivoting tap collet for fast, trouble-free alignment. Especially productive when hundreds of holes need to be threaded. The XLT Tapper is easy to use, powerful and lightweight. Controlled speeds allow operator to thread perfect holes every time. With safety in mind, the tapper was designed with a built-in-safety clutch, reducing injuries in the field. Fits all standard square shank taps from #10 to 5/8" in steel and # 10 to 9/16" in aluminum.