This is a RWS/Umarex Pellets known as the T4E, model 2292300.
Black rubber balls are standard equipment in T4E activities. Their high quality makes them ideal for police training and for self-defense in one's own four walls. These precision-made projectiles spell safety in any caliber (.43 / .50 / .68).
Features:
Caliber: .50
Material: Rubber
Color: Black
Weight: 1.08 grams