After 6 months of use, the coupling between Buggy and board is broken. The spring no longer makes it. After six months, the is simply not acceptable. New couplings cost whopping 23, -! Positive to mention is that the board has served us well, over curbs, forest trails and historic cobblestone it rolled diligently with ... but this does not justify the defective spring or explained ...: - / certainly not when two small Spare parts, almost half of the entire part cost! That's a rip and a cheek!