Introducing the NEW SNAPPER SHEAR PRO! It attaches to any drill motor! You can now cut HardieBacker® cleaner and faster, in ANY SHAPE and ANYWHERE. Cuts 1/4" — 1/2" backer board. Straight, right-angle, and curve cuts. Circle cuts as small as 3" diameter. Reduces airborne silica dust. You can easily cut indoors with less mess and it adjusts for right and left-handed users!