VXB Pack of 16 pieces 3/8" Bore V Groove Guide Bearings:Shielded RM2ZZ W2 W2ZZ NW2 Inner Diameter 0.375 inch</br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41X0IYn37hL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41XqhitsCKL.jpg' noproxy></br>