This heavy duty caster contains a double locking mechanism with locking pins to ensure safety during construction projects, designed to keep you secure at all times. Non-marking and made from durable material, this wheel is meant to be used with Metaltech Baker and Buildman scaffold systems. It's for various tasks in construction, such as painting drywall or assembling a cart for easy transport of materials. Your safety is ensured when using this caster, as it is ANSI certified, CSA approved, and OSHA compliant.