... 3.For car,track,bus Car simple 2-point harness beltsimple 2-point safety belt,used both front and back of car ... ,metal formed parts,manufactured to your needs,such as ,safety belt assemblies,safety belt tongues,seat belt buckles,retractors,webbing guide etc ... with petrol,grease and acid will be detrimental.8.periodic inspection of the installation will ensure reliable service of the seat ...