... .with orientation Three year Gurantee! ensure the best quality !!*1.Floor Spring; Door hinge *2.Head type: Dorma ,MAB ,Newstar ,all this ... ! About the quality,all the items will be tested over 50,000 times with our professional testing machine before we confirm ... more information,pls feel free to contact me! thank you! Floor Spring;door closer,door hinge,Floor hinge; V-25