Sealey universal trolley for portable mig welders sealey btr4 robust trolley carries portable mig welder and gas bottle making relocation of welding equipment quick and easy fitted with two fixed wheels and two castors for excellent manoeuvrability and supplied with bottle retaining chains and cable stowage hooks upper tray for mig welder and two lower trays for associated items suitable for portable mig welders up to 300mm wide and 480mm long sealey btr4 universal trolley for portable mig