Great Planes Wheel Collars are a handy way to lock wheels on a axle. The
The collars are made of brass and are chrome plated to resist corrosion for
trouble-free use time after time. The collars come in 5 popular sizes and each
include its own hex wrench for installation and removal.
These have a Great Planes one year warranty.

Includes

Four 1/8" plated brass wheel collars
Four 4-40 set screws
One hex wrench
One reusable plastic parts pack