Turbo Shear Heavy Duty, Lightweight shear head for easy one hand control, Telescoping clamp fits large or small drill housing (drill not included) Heavy duty jaws for cutting 18G galvanised steel. Fits most 14.4v or larger 240v electrical drills with 1200rpm requirment. Cuts straight & to the left. Capable of cutting tight curved patterns, squares & profile crosscuts. Blind cuts require a 1/2'' starting hole.