Remington Ammunition NS120M4 20 Gauge 3" 1 Oz 4 Shot 25 Bx/ 10 Cs Nitro-Steel delivers greater Hull Capacity Which Means heavier charges And larger Pellets, Which makes These Loads Ideal For Large Waterfowl. Nitro-Steel delivers denser patterns For greater Lethality And Is Zinc-Plated To Prevent Corrosion. Gauge: 20 Gauge Type: High Velocity Length: 3" Ounces: 1 Oz Shot Size: 4 Muzzle Velocity: 1450 Fps Rounds Per Box: 25 Boxes Per Case: 10 Shot Type: High Velocity Application: Waterfowl