Qbit SQ1000-S Single, SQ1000-D, SQ1000-SC. 3PC Kit, Cut-in eXact rectangular-holes in seconds. QBit's have a radially contoured blade to facilitate a clean blade entry also called a clean start and it stops the blade from walking. If your job requires you to cut-in wall boxes in drywall, the QBit is for you. Fits on most Oscillating Multi-Tools and turns it into a hole making machine! Unlike a drywall saw which leaves unsightly ragged edges, the QBit makes a perfect hole every-time and it does it quick and efficiently! ---- Who needs to make Single Gang or Double Gang rectangular-holes in drywall for wall boxes: High and Low-Voltage Tech, Electricians, Telephone, Data, Alarm/Security, CCTV/IP-Camera, Antenna, Cable, Dish, Automation, Home-Theater including CEDIA members, HAVC, Drywall Contractor/Installer, Etc. --- PTIA 2017 Tool Innovation Awards Winner. --- Note: Re-packages both blades into 1 clamshell. The 3PC is American Engineered and Made in the USA. Recommended: Oscillating Tool w/18V or higher (some need an adapter).