Economic, Competent, Reliable Ergonomic, Solid, Durable,Safe Autoclavable handpiece, Battery powered The Economic Series products ... are powered by NiMH batteries.Specification:For Traumatic, intramedullary pin operation and joint replacement that require boring, drilling and ... 1.3kg. Electric Cannulate Drill (EC Series) / Surgical Wire, Pin and Hollow Drill /Higher Torque Orthopedic Electric Drill