Keep your dog secure with the CRaTE Locking Pin—an extra layer of safety for travel, training, or home use. This durable steel rod slides easily into place to hold the CRaTE door shut and prevents the door pins from retracting. For added protection, simply attach a padlock through the welded ring on the locking pin and door to deter tampering and keep your pet safe. *Works only with CRaTE style kennels and doors