Master Mechanic 2-Pack 1/4" I/M x 1/4" NPT male industrial plug. Pre-applied teflon thread sealant. 2 Pack Size: 1/4" I/M x 1/4" NPT male Industrial plug Pre-applied teflon thread sealant. WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birt