This listing is for ONE choke tube. Buy 3 ships free: Buy 3, or any 3 items, and shipping is Free for the entire order, lower 48. Here are 28 gauge Choke tubes to fit the Unique 28 Gauge Over and Under Shotguns from Rizzini. Manufacturer is Battista Rizzini of Marcheno, Italy. Model is Techni-Choke, and so marked from the factory. These choke tubes will only fit Rizzii made shotguns. That includes the Savage Milano, and Sig Imports Aurora and L.L. Bean all chambered in 28 gauge. Construction is one piece stainless. Threads are front collar traditional mobil type, but they will only fit the Rizzini and no others that we know of. Muzzle diameter is .5435, Skeet, with 5 slash marks. Overall length is 1.8015 inches; rear internal diameter is .5595; midsection external diameter is .6005. Finish is brushed surface stainless. Each tube is new in its factory container. We’re offering them each for only $ 24.00.