For use on hydraulic cylinders with nuts from 2inch to 6inch (51mm to 152mm) NICE DESIGN: Reversible to fit 1/4inch & 5/16inch diameter pin holes. Corrosion-resistant & Durable Steel construction with extreme anti-wear property FITMENT: Specially designed to fit hydraulic cylinders on most farm and construction equipment. Repair tool for backhoe and other heavy equipment / farm machines / hydraulic machinery advantage: Heavy duty wrench features a 3/4inch square drive to tackle even the most stubbom gland nuts Model:1266 Colour:Black Material:Metal Package Contents: 1 * Nut wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.