Makita 1/4" Industrial Cut-Out Bit - Window/Door 193453-1 | USA GT
1/8 in. Standard Point Drywall Cutout Zip Bits for spiral Saws and Rotary Tools High Speed Cutter - China Spiral Saw Drywall Cutout Bit, Standard Point Drywall Cutout Zip Bits | Made-in-China.com