Review on High-Quality SH90 Replacement Heads for Philips Norelco Shaver Series 9000 - Series 8950 by Tonya Brown

Vanes did not work properly with existing head assembly. Creaking noise when shaving certain areas of the face. Sent the blades back for a replacement kit but they had the same issue. Norelco made some design changes that caused the problem. The old blades had a green part in the middle of the blade that connected to the back of the razor, but the new blades are grey. Norelco support was no help. I ordered a complete head assembly (blades had green parts) and it works great.