TOBWOLF 8 Pack 58mm x 39mm, 95A, Indoor Quad Roller Skate Wheels for Roller Derby Speed Skating, Artistic, Jam, Rink & Rhythm Skates, PU Wear-Resistant Wheels Double-Row Roller Skates Accessories - J19205-TW-US

• 【Premium Material】-- Made from durable polyurethane material, designed to provide good grip and speed in all hardnesses and has excellent durability. 【Size & Diameter】-- 58mm in diameter, 39mm in width, equipped with ABEC 9 bearings and spacer, the inner diameter of bearing is 8mm, outer diameter of bearing is 22mm, please ensure if it is the specifications you need before purchasing. Bearings and spacers are already installed on the wheel. 【95A Hardness for Indoor Performance 】-- With 95A hardness, offering grip, speed and durability. These long lasting artistic wheels are competition quality & formulated to roll smoothly while providing a fantastic grip on the rink floor. Suitable Skating Style: Jam, Derby, Speed, Session. 【Highlights】-- The inner and outer edges of the hub are oversized, which reduces the amount of urethane on the edges of the wheel. This makes it easy to perform stops and offers excellent response. The middle of the hub has room for more urethane, which offers grip, increases control, and improves ride. 【Package Included】-- Pack of 8 wheels replacements.