– Made entirely Cast Steel, Heavy duty, Long Life– Chuck takes drill bits with sizes: 0.8mm-1.8mm, 3/8″– Double pinion action, with 2 gears for more efficiency– Smooth-finished high-strength wooded handles and cast iron breast rest– Suitable for wood, bamboo, soft and thin iron, copper, aluminum, plastic, PVC, acrylic, fiberglass board, circuit board and so on
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