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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.

Brief introduction of t51 top hammer drill bits: 1. application: this t51 top hammer drill bits for mining are widely used in metallurgy mine, geological exploration, water conservancy construction, electricity, traffic, tunnel, quarry, national defence stone project etc. 2. material: drill bits are made by high quality alloy steel bar and ...

There are 10 hd65 hammer 6 inch dth hammer suppliers, mainly located in asia. the top supplying country or region is china, which supply 100% of hd65 hammer 6 inch dth hammer respectively. hd65 hammer 6 inch dth hammer products are most …

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