Skateboard wheels Material: DuPont MDI high rebound polyurethane.

Our Normal skateboard wheels:

Size: 50*28mm , 50*30mm, 50*36mm, 51*28mm, 51*31mm, 52*28mm, 52*30mm, 52*32mm, 52*36mm, 53*28mm, 53*32mm, 54*32mm, 54*34mm, 54*36mm, 55*33mm, 56*32mm, 56*36mm, 58*40mm;

Hardness: 97A , 100A, 102A, 104A; Rebound: 55% ~ 85%.

Our Longboard wheels: Size: 55*32mm, 55*34mm, 58*32mm, 58*36mm, , 60*32mm, 60*36mm, 60*40mm, 60*48mm, 61*45mm, 62*38mm, 62*50mm, 62*51mm, 62*52mm, 63*40mm, 65*32mm, 65*36mm, 65*40mm, 65*41mm, 65*44mm, 65*51mm, 68*56mm, 70*42mm, 70*46mm, 70*51mm, 76*53mm;

Hardness: 75A ~ 85A; Rebound: 55% ~ 70%.