Look into the Knots2U wingtips.
I second this.
The factory Cessna tips are plastic and overtime deteriorate to the point of becoming useless.
The Knots2U are fiberglass and far superior the the ABS plastic that Cessna used.
As Ron noted, you will also have the option to install landing lights in the wingtip (if you so desire) which is a great upgrade that several of us here have opted for.
