CO2 Tank bracket for 20 oz. Power Shot bottle 3.125 in. Diameter from Power Tank. This little baby bracket is designed to hold our 20 oz. Power Shot or Jet Pak bottles. The frame is powder coated satin black and the holding strap is stainless steel with a t-bolt latch. There are no tools needed to remove the bottle; just a twist of the knurled thumb nut. Rubber trim helps hold the bottle secure and protects the paint.