Gate Wheel, 6 Inch Wheel Diameter, Heavy Duty Spring-Loaded Caster for Metal ...

Quick Fuel 18-3SQFT .120 in. Needle & Seat Kit (Spring-loaded)

4.3" Heavy Duty Gate Wheel 360° Rotation Gate Wheel with Spring Loaded Shoc

Add on legs with casters

Heavy Duty Stainless Steel Spring-Loaded Gease Gun Holder Part # GGH1

Stark USA Universal 8" Flat-Free Tire Gate Wheel Suspension Spring-Loaded Woo...

Index wheel with spring loaded locking pin great for many projects!