Add mobility to your Maker Pipe and conduit build with the caster kit! Our casters are on a swivel wheel that doesn't mark up the floor so they are perfect for the home and shop. One caster kit includes two locking and two non locking casters. Each caster has an insert pre-applied that fits it securely in the end of the 3/4" or 1" EMT Conduit. Use a rubber mallet to tap the caster insert down into the conduit and finish off your mobile build!