Reliable Performance: HeyZomm's inline skate replacement wheels are available in 64 mm, 70 mm, 72 mm, 76 mm, 80 mm, 84 mm or 90 mm diameters with a standard width of 24 mm; Each wheel is equipped with high-quality 8 mm ABEC-9 bearings and floating spacers; Constructed from abrasion-resistant, high-density PU, these wheels are suitable for use on uneven or challenging road surfaces 608RS Bearings ABEC-9 and Floating Spacers: The 8mm I.D bearings and spacers included with HeyZomm roller blade wheels may not be suitable for your inline skates, hockey roller skates, caster wave board, snake surfboard, carry-on luggage suitcase, office chair, or kick scooters; However, they can be easily removed and replaced with the original or purchased 6mm I.D ones Reduced Friction and Increased Speed: This all-around wheel is designed for intermediate players seeking excellent speed, grip, and durability on various surfaces; Whether it's freeride, fitness, urban, slalom, or recreational skating, you can rely on its performance 85A Durometer: 85A, with a MODERATE hardness and excellent bounce; This wheel is known for its exceptional durability, providing long-lasting use; It offers a superior grip and a strong hub that can withstand any jumps; The HeyZomm wheels brand considers it the most popular choice among their customers The Best Indoor and Outdoor Wheels: Each set includes 8 complete inline wheels; Specially formulated for outdoor use, they also perform well indoors or on the floor; If you are not completely satisfied, please feel free to replace or return the wheels directly, or contact us now INLINE SKATE WHEELS 85A