Which statement best describes the purpose of the open end on a combination wrench?

Which statement best describes the purpose of the open end on a combination wrench?

• A. It provides faster turning of hex and square nuts and bolts.
• B. It improvises a strike surface for hammer blows.
• C. It seals hydraulic fittings.
• D. It measures the head size of screws.

Answer: (A)

Open ends are built to slip onto a fastener from the side, letting you place and start turning quickly in tight spaces. Because you don’t have to fit the wrench over the top of the nut, you can engage hex or square fasteners fast and move on with less setup time, which is why this design speeds up turning. The open end grips two opposite faces of the nut, giving enough bite to apply torque without needing full wrap around the head. It isn’t intended as a hammering surface, it doesn’t seal hydraulic fittings, and it doesn’t measure screw heads, so those uses don’t fit with what the open end is for.

Open ends are built to slip onto a fastener from the side, letting you place and start turning quickly in tight spaces. Because you don’t have to fit the wrench over the top of the nut, you can engage hex or square fasteners fast and move on with less setup time, which is why this design speeds up turning. The open end grips two opposite faces of the nut, giving enough bite to apply torque without needing full wrap around the head. It isn’t intended as a hammering surface, it doesn’t seal hydraulic fittings, and it doesn’t measure screw heads, so those uses don’t fit with what the open end is for.