This is a Remington Steel Shot known as the Hypersonic chambered in 12 Gauge 3.5", model 26799.
With the highest velocity and downrange pattern energies ever achieved" HyperSonic Steel takes lethality to new heights" to a level of terminal performance where more birds drop with fewer shots - at the farthest reaches of your abilities. And only Remington harnessed the wad technology to do it.
Features:
12 Gauge
1,700 Feet per second
3-1/2 Inch #4 Steel shot
1-3/8 Ounce
25 Rounds per box