The DEWALT SDS-Plus Holesaw Mandrel is capable of fast, tool free changeovers. The quick release collar helps to prevent holesaw lock up. It comes with a Extreme pilot drill bit for faster drilling...
The DEWALT DEWDT7607QZ has the following specifications: Accessory Type: No. 12 Pilot Bit and No. 4 Countersink Cutter for use with wood Shank: 5/16 inch.
The DEWALT DEWDT7606QZ has the following specifications: Accessory Type: No. 10 Pilot Bit and No. 4 Countersink Cutter for use with wood Shank: 5/16 inch.