The Bont ABEC 7 skate bearing has been extensively tested on elite inline speed skaters. Under the load of a skater, especially in plastic hub wheels, bearings can warp which slows them down. Thankfully, the Bont ABEC7 racing bearing is made from high-strength steel which minimizes this effect and keeps the shape of the bearing as round as possible which decreases rolling resistance at high speeds.
The double shields assist in keeping the dust and dirt out of the bearing. With exceptionally low rolling resistance and pre-lubricated with a light racing oil, you are race-ready straight out of the box!