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 3/16" plated brass wheel collars / Four 6-32 set screws / One 1/16" hex wrench / One reusable plastic parts pack / KPM 11/9/93 / ir/jl