Cheap And Discounts 20PCS 683-2RS deep groove ball bearings 683-2RS (3*7*3) plastic cover sealed ball bearings--Free Shipping Wholesale. Buy Directly From Merchant Shenzhen Sheng Rui Bearing Co., Ltd.. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.