Threaded Bottle Stopper Insert - 4 Pack
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Making bottle stopper tops has never been easier. Simply drill a 1/2 in. pilot hole into your blank, glue in the insert and you're ready to mount your blank to the bottle stopper chuck (Item # PK-BS1-MJ) and turn. Works with any material that can be machined. Allows you to easily assemble and disassemble your blank from the kit. You can also use it as a Screw Chuck system where you use the insert in the blanks and the Bottle Stopper mandrel as a screw chuck. Comes in a pack of 4. Internal Thread is 3/8"x16TPI.