... .Closing speed can be adjusted. 3-in-1 door closer hinge 1.Specifications Shaft DiameterΦ24mm Page Length 171mm Expanded ... aluminum, high quality steel or stainless steel, advanced hydraulic oil (pour point -45 degrees, flash point 190 degrees) used; imported ... performance ensured,2, nice looking shape, no need of connection.1), no connecting parts,. petite structure, elegant shape2),Application of ...