Product Description: This is a new heavy-duty lock slide rail with good stability, small swing, smooth sliding, easy to use, suitable for all kinds of cupboard, tool cabinets and other large equipment, is the furniture industry, caravan and industrial field of high-quality choice. Specification: Colour: Silver Type: Heavy slides Material: high quality cold rolled sheet Bearing capacity: 120KG Surface treatment: blue zinc, electrophoretic black Installation Form: Drawer Side Installation Specifications:18"(450mm),20"(500mm),22"(550mm),24”(600mm),26”(650mm),28"(700mm),30”(750mm),32" (800mm),34”(850mm),36”(900mm),38”(950mm),40”(1000mm). Origin Length: 17.7 ", 19.6”,21.6", 23.6”,25.6”,27.5”,29.5”, 31.4",33.5”,35.4”,37.4”,39.3”. Extended Length: 35.4”,39.3”, 43.3",47.2”, 51.7”,55.1",59.1”,62.9",66.8”,70.8”,74.7”,78.7”. Package Included: 1 Pair Heavy Slide (excluding mounting brackets and screws) Note: -Due to different producing batches, product details might be a little different. If you minding the difference, please buy it carefully. -Please allow 1-3MM differs due to manual measurement. -Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Three-section track design, effective load-bearing, precise contraction. Solid steel ball, check can bear 120 KG (the longer the pull out, the smaller the load). Anti-skid device with lock, suitable for heavy industrial equipment. Anti-skid rubber pad, increase friction, put back track colloidal fall and open automatically after closing. The surface is coated with high density zinc metal, which can effectively prevent the corrosion of the product surface and prolong the service life of the product.