Installs easily into any 1/4" hole. Centering ears and locking barb design hold it securely in place. Can be used with all self-locking ties up to 14" and 75 lb. tensile strength.  Made with 6/6 durable nylon. UL listed. Meets UL94V-2 flammability classification. Size is 5/16" x 9/16"