FEATURES:-Our Special Forces Maximum Barrier Penetration Magnum is able to penetrate windshields, rims, tires & even engines.-It incorporates an extra-hard alloy for maximum penetration, as its name implies.-Specially developed to police & military specs-Caliber: 12 Gauge-2 3/4"-1 3/8 oz slug-602 GrainPRODUCT SPECIFICATIONS:Dimension 1.00 X 2.80 X 4.15Height 1.0000Width 2.8000Length 4.1500GAUGE 12LENGTH IN INCHES 2.75DRAM OR VELOCITY 1650 FPS.OUNCES OF SHOT 1-3/8SHOT SIZE SLUGSHELLS PER BOX 5.0000BOXES PER CASE 20.0000SHOT MATERIAL LEAD