Specification Brand : WBTY BulletPoint1 : and Secure The pin on the support channel trolley bearing is made of alloy steel, which guarantees the high strength of the wheel. Medium strength steel, high strength, impact resistance. BulletPoint2 : Stable Work: standard wheel mounted deep ball bearings, very soft, no noise when using. Position the welded bearings to ensure stable . BulletPoint3 : Easy Installation The center distance of the bottom hole of the strut cart can meet the location requirements of the installation holes of different types of electric hoists. BulletPoint4 : NEED TO INSTALL OUTSIDE TRACK:The tram cannot pass through the track when the mounting screws are installed inside the strut passage. Therefore, the bolts that hold the strut passage must be installed outside the track. BulletPoint5 : APPLICATION AND MAXIMUM LOAD CAPACITY Rolling cart all support channels with a width of 1-5/8" and 1-5/8" or higher. 2200 pounds shopping cart design load. Color : Blue ItemName : 2 x 4-wheel trolley assembly, T-type, alloy steel warehouse trolley assembly, 1-5/8 inch higher strut channels ItemPackageDimensions_Height : 11 centimeters ItemPackageDimensions_Length : 22 centimeters ItemPackageDimensions_Width : 13 centimeters ItemTypeKeyword : beam-trolleys laufkatzen Manufacturer : WBTY Material : Composite ModelName : WBTYtwrm18u39y ModelNumber : WBTYtwrm18u39y NumberOfWheels : 5 PartNumber : WBTYtwrm18u39y ProductDescription : 1. Safe and Durable The pin on the bearing of the strut channel cart is made of alloy steel, which guarantees the high strength of the wheel. Medium strength steel, high strength, impact resistance. 2. Stable Work: standard wheel mounted deep groove ball bearings, very soft, no noise when using. Position the welded bearings to ensure stable operation. 3. Easy Installation The center distance of the bottom hole of the strut cart can meet the location requirements of the installation holes of different types of electric hoists. 4. NEED TO INSTALL OUTSIDE TRACK:The tram cannot pass through the track when the mounting screws are installed inside the strut passage. Therefore, the bolts that hold the strut passage must be installed outside the track. 5. APPLICATION AND MAXIMUM LOAD CAPACITY Rolling cart all support channels with a width of 1-5/8" and 1-5/8" or higher. 2200 pounds personal shopping cart design load.