... wheel with braker 2.heavy duty,apply to large flight case flight case caster,heavy duty caster,swivel caster,1. ... .Color:caster base is coated with bule zinc,nickel free,enviremental friendly;the wheel is light blue.3.specifications ... :This swivel caster is made for the very large flight case,duo to the heavy duty elastic rubber wheel ... make me know your samples or drawing pictures. flight case caster