Westward 5RDZ5 Pin Spanner Wrench Features Fixed-pin spanner wrenches have a curved arm with a small pin or nub on the end. The pin or nub fits into one of the holes in the nut and the handle is turned to loosen or tighten the nut. These wrenches are not adjustable and can only tighten or loosen one size nut. Side or Face Opening / Side Material / Alloy Steel Finish / Black Oxide Pin Diameter / 1/4 inch Hook Thickness / 13/32 inch Hook Depth / 2 inch Pin Length / 1/4 inch Adjustable / Manual Adjustment Type / Quick Adjust Pin Shape / Round Overall Length / 8-1/16 inch Tether Style / Tether Capable Corrosion Resistant / Yes Handle Color / Black Handle Type / One Piece Insulated / No Measurement Type / SAE Non-Magnetic / No Non sparking / No Capacity / 1-1/4 inch to 3 inch Maximum Jaw Capacity / 3 inch