Push-mount bases- black- 5/16″ x 9/16″ 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. for use at temperatures not exceeding 85 made with 6/6 durable nylon. ul listed. Meets ul94v-2 flammability classification.