Load rating: 500 lbs 227kg/pair 18 inches Extension: 100% full time extension Side space: 19.1 mm(0.75 inches) side thickness Feature: lock-in and lock out Drawing: 2D, CAD, 3D drawing offer for reference Material: hardened cold rolled steel High: 76 mm(3 inches) Steel plate thickness: 2.5*2.5*2.5 mm Mount: Side- or flat-mount