DescriptionThis is a pack of steel balls which can be used for bearing or slingshot. Adoption of premium carbon steel material, it is durable, solid and long lasting use. The surface is smooth and even without rust spots. Suitable for bearing, Catapult, electric drill and so on.Feature- Color: Silver. - Material: Carbon Steel - Size: About 0.10X0.10X0.10cm/0.04X0.04X0.04inch. - Its surface is smooth and even without rust spots. - Adoption of premium material, durable, solid and long lasting use. - This item includes 200pcs steel ball, which can be used for bearing or slingshot. - They shoot straight and hit hard, the slingshot ammo can be loaded at any slingshot. - The slingshot ammo is more quantity, more professional, more harder, more environmentally friendly.