Wheel bearing set. All Balls Racing wheel bearings feature high-speed bearings, precisely manufactured to ABEC 3 standard. They also include triple rubber seals that keep the grease inside and protect against water and dirt. Their composition includes Chelvron SRI 2 grease, which contains rust and oxidation inhibitors with an operating temperature range from -29° C to 177° C. They have double TC type seals with stainless steel springs. The sets complete one wheel.