24x40x8mm Ball Bearing 24mm x 40mm x 8mm - Non-Standard24x40x8mm Ball Bearing Non Standard Size Open Deep Groove Style 24mm ID x 40mm OD x 8mm Width This non standard 24x40x8mm open ball bearing is perfect when standard sizes just won't fit the build. With a slim profile and chrome steel construction, it's a handy solution for repairs, machines, and custom setups that need a unique fit. Inner diameter: 24mm Outer diameter: 40mm Width: 8mm Deep groove design for steady radial load support Open style great