SR8ZZ Bearing 1/2" x 1-1/8" x 5/16" Stainless Steel Shielded Bearing1 Ball Bearing SR8 ZZ 1 2" x 1 1 8" x 5 16" Stainless Steel One Stainless Steel Ball Bearings, a standard bearing size with dimensions commonly used across many industries: 1 2" x 1 1 8" x 5 16". Bearings are made from stainless steel, each Comes with double metal shields (ZZ) to keep out dust and dirt, additionally, these bearings come pre lubricated with grease for smooth operation Double Shielded Ball Bearings Size: 1 2" x 1 1 8" x 5 16" inch Deep