These handy pushers attach to the coin holder on the rack and swing out to push the wall into place. They are sometimes known as "extending arms" or "helping hands." Please note that in most cases mahjong pushers must be stored separately from the rest of the mahjong set, and will not fit on all vintage racks. Additional Details ------------------------------ Product description: These handy pushers attach to the coin holder on the rack and swing out to push the wall into place. They are sometimes known as "extending arms" or "helping hands." Please note that in most cases mahjong pushers must be stored separately from the rest of the mahjong set, and will not fit on all vintage racks.