Features: 1. Material: Made of high grade steel materials, with strong hardness and high performance, rust resistance. Long service time. 2. Application: Specially designed to fit hydraulic cylinders on most farm and construction equipment. Repair tool for backhoe and other heavy equipment , farm machines, hydraulic machinery. 3. Size: Heavy duty wrench features a 3/4(1266) square drive to even the most stubbom gland nuts. 1266 model wrench is a large size gland nut wrench, more suitable for larger gland nuts. .