Tensor skateboarding trucks is a skateboard truck company founded and designed by professional skateboarder Rodney Mullen in 2000. Tensor Trucks offer trucks in three different heights (low, mid and high) tailored for differing wheel diameters. The high skateboard truck is designed for 58mm wheels and smaller, the mid for 54mm or smaller, and the low for 52mm skateboard wheels and smaller. The most visible feature on a Tensor skateboard truck is the polymer baseplate slider. Skateboard trucks can wear out on the baseplates from nose and tail slides. On Tensor trucks the slider is replaceable and is touted to slide better than standard aluminum baseplates.