HI-IMPACT STEEL SHOT BALL BEARINGS, 2X BAG OF 500 STEEL BALLS LEAD FREE AND ENVIRONMENTALLY FRIENDLY - ALSO LEGAL FOR OUTDOOR USE. PRECISION ENGINEERED TO THE HIGHEST QUALITY. HIGH IMPACT HARDENED STEEL. 6 MM FOR LONG RANGE HIGH ACCURACY SHOTS. HIGHLY POLISHED FINISH FOR HIGHER VELOCITIES. Packaged In Plastic Bags For Easy Storage