Flip Skateboards HKD Gumball Wheels 52mm, BlackAt Rampworx Skatepark we believe in stocking the brands who support the industry. With these wheels from Flip we know that the money earned goes back into the skateboard industry and helps out their team. flip skateboards have been in the industry long enough to know how skateboarding works. By purchasing these wheels from Rampworx Skatepark you are supporting flip and their riders. This is a terrific set of wheels that includes all of the industry