Easy to install. Clean the sooner than installing. Compatible With: Model: 1 110 one hundred twenty 130, 130s-1 & 815 Type 5683. Model: 130s-1, 140, 150, 150s-1 & 835 Type 5682, 5684. Model: 140, a hundred and fifty & 150s-1 Type 5685 Style:B Colour:Black+silver Material:Metal Size:6cm Package Contents: 1 * Shaver information superhighway 1 * cutter head Only the above kit content, diversified item aren't included. Note: Light and sundry reveals could cause the colour of the thing within the photo a little bit assorted from the genuine thing. The length allowed error is +/- 1-3cm.