6910ZZ Bearing 50x72x12mm - Double ShieldedBall Bearings 6910ZZ 50 mmx 72 mm x 12 mm One Bearing 1 Ball Bearings the inner diameter is 50, outer diameter is 72 and the width is 12, a standard bearing size commonly used in a variety of industrial and commercial applications, Made from high strength chrome steel for durability and performance, Comes with double metal shields (ZZ) to keep out dust and dirt, additionally, these bearings come pre lubricated with grease for smooth operation. Double