Easy to install.Clean the razor before installing.Please make sure well your razor model.Suitable for shaver models: HQ912 HQ913 HQ914 HQ915 HQ916 HQ917 HQ902 HQ904 HQ906 HQ909 HQ986 HQ988Colour: blackMaterial: ABSSize: 4 x 3 x 2cmPackage Contents:1 x Shaver replacement headOnly the above package content, other products are not included.Note: Light shooting 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.