Drive Size = 1/4 in 타입 = Extension Drive 타입 = Square 전체 길이 = 150 mm Sub 타입 = Locking Extension Bar Locking Extension, 1/4" Sq Drive. 1/4" square drive patented locking extension which prevents possible damage to machinery when approaching or withdrawing the tool by eliminating the risk of losing sockets. Especially useful when working in confined environments. Length 150mm.