E-Z Drill’s Model 210 equipment-mounted concrete drill attachment series consists of three models: the three-gang Model 210-3 EQ MT, four-gang Model 210-4 EQ MT and five-gang Model 210-5 EQ MT. The series is compatible with most backhoes and excavators. The pneumatic drills offer specially designed features for maximum productivity and reduced maintenance, making them ideal for full-depth road repair and patching projects. The units are capable of drilling 5?8- to 21?2-in.-diam. holes at a depth of 18 in.