This is a pack of ten 1/4x3/8x1/8" metal shielded "Speed" bearings. ProTek R/C "Speed" bearings are high quality steel/chrome bearings designed for the R/C racing enthusiast.

These 1/4x3/8x1/8" metal shielded bearings are the standard bearing for the clutch in Team Losi XXX-NT Adam Drake Edition vehicles, as well as for use with many other vehicles.

Please check the manual that came with your vehicle for the correct size if you are not certain.