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Speedmade is one of the most professional dth hammer bits manufacturers and suppliers in china. if you're going to buy customized dth hammer bits made in china, welcome to get quotation from our factory. for more information, contact us now.

Welcome to epiroc's all new cop m-series of dth hammers. our 6", 7" and 8" hammers are designed and built to perfection. they are faster, lighter, more service friendly and longer lasting than ever before. our new hammers come with a wealth of new design features. these translate into great benefits for you.

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.

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