Turn the bolt you can't even see.A slim, all-metal extension wrench that carries torque around whatever's in the way — so buried bolts break loose without a skinned knuckle or a wasted afternoon. 3/8" female fitting Full metal construction Chain-driven design Slim profile — built for tight spaces 360° bidirectional rotation 53 ft·lb (72 Nm) max torque Size: 15.6" x 1.5" x 0.7" (39.6 x 3.8 x 1.8 cm)