40MM Yellow First In First Out Flow Roller Curtain Track With 4000mm Per Bar

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40 MM Yellow Wheel Roller Track Flow Roller Track Palacon in Pipe Racking Quick Detail: 1. size of the roller track:40mm,60mm and 85 mm in width. 2. Roller Track is one of pipe rack products’ part, using for assemble flow type pipe rack products. 3. The black wheel one have anti-static function and without anti-static optional . 4. There are different size and different material track. Iron body track is 38mm wide, Aluminum body track is 40mm wide. 5. Different color of wheel