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If you want to buy the best cordless hammer drill, there is no better option than DEWALT DCD996B 3-Speed Hammer Drill. The polymer battery ensures the improved time coverage of the drill. It performs about 57% better than normal motors. The 250 BPM allows the user to drill faster.
In the past when this has happened to me I have had to replace the chuck. Problem is, the chuck is not a normal one and the correct chuck has a list price of about 65 pound and needs a special service tool to take it off and put it on again.
On my DW988 the ring would go past 21 a couple of clicks to a symbol that looks like a yellow T and that would be hammer mode when I press down to drill.
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