5/16" diameter rear bore; 1/4" diameter center bore.
This three-inch shank is the part you need to connect the jockey box coil to a standard US draft beer faucet for hassle-free pouring. * Specs - 3" length, 5/16" diameter rear bore, and 1/4" diameter center bore.
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Fatima A.
Best international shipping I've ever tried. Worth every penny!
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Received my product in pristine condition. Great service overall.