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The PR-1 uses hollow drill bits and weighs only 22 kg (48.5 pounds). The drill is designed to drill all types of flat bottom rails (including manganese alloy rails). The drill is complete with a precision quick clamp. The PR-1 has been designed to ensure portability, rugged performance, productivity and ergonomic design. Lubricating and cooling system under pressure are located inside the spindle. Available with rail forms and index bars to ensure proper height every time, the company says.