RED BOTTLE KNOB, 0.320 in. SQUARE DRIVERED BOTTLE KNOB, 0.320 in. SQUARE DRIVERed Knob Shown on CO2 Bottle
Quantity Your Price
1 $33.99

C72-261

RED BOTTLE KNOB, 0.320 in. SQUARE DRIVE


Confirm size needed by measuring square drive on your bottle.

Made in the USA

A Better Square-Drive Knob


Get a solid grip on that CO2 bottle with a Pro-werks’ Bottle Knob. This lightweight, all-American solution features deep notches, and they match the rest of the Pro-werks’ line up of signature Easy Turn Fill Caps and aluminum knobs

Starting with American melt, aircraft-grade 6061-T6 aluminum; we precision machine each knob on one of our multi tasking MAZAK CNC machining centers, then finish them in your choice of anodized black, red, blue, or silver colors; and our popular micro-polished aluminum finish.

Available in two different square drive sizes to accommodate valves found on most CO2 bottles. For proper selection, we recommend that remove your original knob and measure the "square drive" of the bottle valve to confirm your size before ordering.


Crafted with pride in Mears, Michigan, USA

Bottle Knob 0.320 in. Square Drive: C72-261
Inside Grip Diameter: 2.0 in.
Square Drive: 0.320 in.
Overall Height: 0.812 in.
Outside Grip Diameter: 2.5 in.
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