This is a pack of ten 8x16x5mm dual sealed "Speed" 1/8 wheel bearings. ProTek R/C "Speed" bearings are high quality steel/chrome bearings designed for the R/C racing enthusiast.

These 8x16x5 dual sealed bearings are the standard bearing for 1/8th scale off-road vehicles, both for internal bearings in the diff cases as well as external wheel bearings. These bearings feature a metal shield on one side and rubber seal on the other. Please check the manual that came with your vehicle for the correct size if you are not certain.