The WEN Garage Glider also features four 2-1/2-inch swiveling casters for easy movement in all directions. The 100% ball-bearing system increases the lifespan of the casters while providing users an extra smooth ride.The two foldable magnetic trays on either side of the chair's body allow for an easy solution to loose screws and bolts. And, aside from the three 12-3/4 x 7-3/4 x 2-1/4-inch drawers, this creeper seat also has 16 onboard storage slots mounted to the back of the chest's body to organize your most commonly needed tools. Work in comfort with the WEN Garage Glider. Remember when you could glide from job to job?