kolka oj 54 curbsucker bloodsuckers 97a ridehubA powerful vibe and a ride without compromise. The OJ Curbsucker Bloodsuckers 54mm 97a wheels combine old school style with modern technology. The 97a durometer provides a balance between control and smoothness great for both street and skatepark use. Product features: Diameter: 54 mm universal, fast and stable Hardness: 97a a compromise between grip and speed Profile: Classic proven in street and park conditions Design: Atmospheric Bloodsuckers