Gedore KB 3219 Impact reducer 3/4" to 1/2" 6675280Gedore 6675280, Impact reducer 3 4" to 1 2" The Gedore 6675280, Impact reducer 3 4" to 1 2" is available to order online. Contact us if you find the Gedore 6675280, Impact reducer 3 4" to 1 2" at a better price. Impact reducer 3 4" to 1 2" Accessories 20 (3 4") For hand operated sockets and accessories with square drive as per DIN 3120 C 10, ISO 1174, ball locking device