Snap-on Caster Wheel is a set of four for using with snap-on wet/dry vacuum model number 93050 and most other 4 5 10 as well as 12 gallon wet/dry vacuums, Solid caster wheels with metal stems, Provides easy mobility on carpets and hard surfaces, Set of four, Will fit most other 4 5 10 and 12 gallon wet/dry vacuums, Easily attachable, SKU: JSPR033