ADJUSTABLE TENSION:You can easily adjust the tension of this safety spring door closer and also adjust the closing speed of the door closer.Use these closers to convert hinged doors to self-closing doors. EASY INSTALLATION:Spring door closer can be used on doors up to 150 lbs and can be used on both left and right-handed doors.Easily adjust the tension on this safety spring door closer. SAFE DOOR CLOSER: Automatic door closer is made of zinc alloy,with spring operation inside, automatically close the door,and keep quiet and safe when opening or closing,bringing you a quiet and safe life,protecting your door frame and door body. HIGH QUALITY: the spring door closer is finely processed, anti-corrosion and rust-proof, durable, and long-term use without losing color. INCLUDES: Surface mounted spring-loaded door closer,tensioning rod,slide plate and hole plugs to cover adjustment holes in closer body after desired tension has been set. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Colour:black Material:zinc alloy Package Contents: 1 x door closer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.