Why Choose Our Crowfoot Nut Wrench?. Manufacturer Part Number: Crowfoot Wrench Unit Quantity: 5 oz Type: Crowfoot Wrench Size: 1-3/16in. Drive Type: Specialty : Crowfoot Wrench Number of Pieces: 1. Robust Construction: Crafted from high-grade steel, this wrench promises durability and resilience, ready to tackle any task at hand.