Able to operate up to 1 hr with its 6.2 Ah, 18 V rechargeable battery, ESCO Mongoose MILLHOG® self-centering, ID clamping, right angle drive tool can bevel, face, and bore simultaneously. Cutter head can also be supplied for membrane and overlay removal. Ready to fit-up boiler tube panels almost anywhere, this narrow-body tool, suited for 5/8 in. ID to 3 in. OD tubes, requires 2.25 in. min clearance, uses TiN-coated cutter blades, and provides chatter-free operation without cutting oils.