The distinctive speed wing nut is constructed from solid stainless steel, featuring a hex top and wings for easy tightening by hand or with a 19mm wrench which make them useful in application where adjustments or disassembly is frequently required. Speed wing nut works together with the coupler, speed rail and suction cup they act as whole car rigging system. The wings are off center so they can be mounted close each other without fight under a confined space. Standard speed wing nut is available with four threads including 1/2”, 3/8”, m12 and m10.