Combination wrenches feature two same-size openings; the open-end allows you to quickly apply low torque and the box-end allows you to apply final and greater torque
The opening angle allows two actionable positions, reducing the recovery angle to 15°
Box-end: 30° recovery angle
Open-end: 15° recovery angle
The openings are machined to precision for a perfect fit with nuts and bolts
When the wrench is stricken, a vibration is produced through the bolt that makes the residue keeping the bolt jammed to fall off
In particular, the flat design on these wrenches (openings in a straight line with the wrench handle) allows it to be used in places where there is no object or obstacle in it's way
12 points designed to perfectly
fit the nut on the tool