Key-type chuck
A 16 mm key-type chuck. A keyed chuck grips harder than a keyless one and does not loosen under reversing load, which is what you want for heavy drilling and large bits. The key is the price of that.
A 16 mm key-type chuck. A keyed chuck grips harder than a keyless one and does not loosen under reversing load, which is what you want for heavy drilling and large bits. The key is the price of that.
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