Each Bones Race REDS Bearing is constructed with quality bearing steel, machined to exact tolerances and polished for skaters who value accuracy and secure axle nut tightening. Featuring a 0.200 precision ground spacer, the extended race ensures superior bearing alignment while eliminating the need for speed washers. Lubrication is provided by Bones Speed Cream R.F., while an inner race groove lets users insert and remove the bearing using the Bones Bearing Tool.