These are good replacement and will perfectly compatible with your old Norelco heads.
MR SHAVE Replacement Shaver Heads are exclusively designed for Norelco select models.
it is NOT made by Philips Norelco
Package include pack of 3 replacement shaver head as images show

Technical Details

Product Details

Package Dimensions
Width : 6 inch
Height : 0.2 inch
Length : 6.3 inch

Shipping Weight: 0.32 ounce (View shipping rates and policies)

ASIN : B00CQFLNEE