Hydraulic Seal Installation Tools is a quick and safe installation tool for flexible rod seals. 3 sizes to cover most rod seal installation job from 0.87inch up (Rod Diameters): (S) 22-40mm (0.87inch-1.57inch Rod) gland hole ; (M) 40-70mm (1.57-2.75inch Rod) gland hole; (L) 70-165mm (2.75inch-6.49inch Rod) gland hole.Replace 1266 & 7463. 1266 Adjustable Gland Nut Wrench fits 51 to 152mm (2 to 6inch) diameter gland nuts. Reversible to fit 1/4inch and 5/16inch diameter pinholes. Suitable for Case 580/580 /580D/580 SE/480E/780 Backhoe, 1150h dozer1 Bobcat cylinders, Hyd Cyl, .7463 Small Universal Gland Wrench fits 25-95mm (1inch to 3-3/4inch) gland nuts. Reversible to fit 1/4inch and 7/32inch pinholes.Designed to tackle gland nuts of cylinders on most farm and construction equipment, agricultural loaders, compact tractor loaders, skid steer loaders, backhoe and hydraulic machinery. Fast and simple to install, impossible to mess up. For Hydraulic Seal Installer: Simply put the seal in it in seconds, smoothly rotate the arm of Hydraulic tool to bend the seal to a Kidney Bean shape and insert the seal to the cylinder groove.For Gland Nut Wrench: Simply fit the wrench to the pinholes. Use the 3/4inch(for 1266) / 1/2inch(for 7463) square drive provided and breaker bar to loose and remove gland nut. Fast and simple to install, impossible to mess up. For Hydraulic Seal Installer: Simply put the seal in it in seconds, smoothly rotate the arm of Hydraulic tool to bend the seal to a Kidney Bean shape and insert the seal to the cylinder groove.For Gland Nut Wrench: Simply fit the wrench to the pinholes. Use the 3/4inch(for 1266) / 1/2inch(for 7463) square drive provided and breaker bar to loose and remove gland nut.Color: As ShownMaterial: alloy steelPackage Contents:1 set x wrenchOnly 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.