Mason Jars, Regular Mouth, Smooth Size SpringFit counter bore attaches securely to

counter bore attaches securely to the flats on shank with hex screws & adjusts for controlled pilot hole depth

and torque

Inside & Outside Jaws & Full Length Depth Gauge

120 & 240 Grit Sandpaper

Heavy-duty blocks are safe and easy-to-use

Mason Jars, Regular Mouth, Smooth Size SpringFit counter bore attaches securely toBall(TM) Smooth Regular Mouth Quart Jars for crafts and special occasions are perfect for creating the dcor and gifts for your wedding, party, or any special occasion The completely smooth jar captures creativity, allowing you to decorate and hand craft exactly as you wish, and the jars and lids are suitable for home canning.