This is a model of Work Meister S1 3P Wheels in 18" 1/24 and 1/25.
Designed as a 3 piece wheel with three different offset rings and a center with cap and studs.
Wheel is 20,5 x 12mm with possibility of making a 10mm wide wheel as well.
Tire has two different profiles included for both 10 & 12mm
Axle hole is 2,6mm