RC car track curbs

Interlocking curbs for RC car tracks. I made if for my backyard track. There are three different radiuses. I suggest tent plugs to hold in place for off road tracks.

Curb01 is 2200mm radius
Curb02 is 500 mm radius
Curb03 is 200 mm radius and is the smallest
Curb04 is a 160 mm long straight section
Curb05 is a 100 mm long straight section
Center01 is a center cup for the smallest curbs.
End01 end piece
End02 end piece