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Use one hand to hold the drill bit in place. tighten the jaws of the drills chuck by turning the metal chuck key with your other hand in a clockwise manner. tighten the chuck jaws as firmly as possible. remove the chuck key, and take your hand off the bit. test the drill to see if it is drilling properly.

Nothing is more important to rock drilling success than drill bits that cut straight and fast through all types of rock. that’s why we offer our customers the best value in rock drill bits. center rock has a full range of face designs, button configurations, and shank styles in many sizes up to a 48” (1219 mm) head, to match application and ...

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