Climbing round / Climbing round

Can limit the principle using the socket spanner which changes, utilizes it to unify in on the wheelchair wheel axis, enables the human who sits the non-electromotive type wheelchair also with ease to climb the ordinary time switch is the green, is the bidirectional rotation, when meets the hill climbing transfers red the wheel nearby switch only can the freewheeling, causes the wheel meets when the hill climbing not to be able the downward rotation, enables the human who sits the wheelchair with ease to climb