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E-Z LOK Drive Tool - Optional - Use with 329-12, 329-1216 E-Z LOK, a division of Tool Components, Inc., is a third-generation, family owned and operated business, founded in 1956. E-Z LOK started with the creation of its proprietary solid wall threaded insert designed for use in soft metals like aluminum, magnesium, and cast iron. The E-Z LOK design allows users to repair damaged or worn out threads without the need for special taps or installation tools. Over the years, E-Z LOK’s line of threaded locking inserts expanded to include specialized products for plastic and wood, as well as E-Z Coil (helical) threaded inserts for metal.