E-Z LOK EZ-329-4 1/4-20 solid insert repair kit
Check compatibility
EZ-329-4 uses a 7/16-14 exterior around a 1/4-20 internal thread. Compare the outside dimension to your repair location before buying this solid kit.
Questions before ordering
Does it use the same preparation as a 1/4-20 wire kit?
Check each kit's drill, tap and driver requirements. This solid insert uses a 7/16-14 outside thread, while the 5521-4 is a different wire system.