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Extension for all kinds of screwdriver bits and screwdriver heads.
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Quick change and release system allows you to replace bit quickly resulting to great improvement on work efficiency.
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Spring auto-lock bit holder provide convenient retention of screws.
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Suitable for double head bits.
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60mm long extension chuck adapter.
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1/4 inch hex shank (6.35mm) can be easily fit into power driver, drill and handheld screwdriver.
