Nylon caster wheels do not develop flat spots on them as is common of other non-metal wheels if they sit in one location with a weighted load for an extended period. LINCO nylon caster wheels are also an alternative to metal wheels in a corrosive environment where rust can quickly develop and force the early and often replacement of metal wheels. LINCO also offers nylon pulleys to assist in the lifting and holding in midair any lightweight or heavyweight object. LINCO not only offers large nylon caster wheels for heavy commercial and industrial use, but also provides small nylon caster wheels to be applied in the use of smaller projects such as garage door track wheels. LINCO nylon caster wheels are an excellent option if you are looking for a strong lightweight wheel option for any of your projects or repairs.