These friction-ring stem caster kits come with multiple casters and are used for applications where all the casters on a piece of office furniture or equipment need to be replaced. These casters are installed on chairs, carts, fixtures, and similar items used in environments where the casters won't be exposed to heavy loads, chemicals, liquids, or high temperatures, such as offices and retail settings. Soft-wheel casters are less likely to damage hard tile or wood floors than hard-wheel casters, and hard-wheel casters won't grab or snag carpets. Each kit's load rating is the sum of the load ratings for all the casters in the kit. For example, if each caster in the kit has a load rating of 200 lbs. and there are four casters in the kit, then the load rating for the kit will be 800 lbs.