E-Z LOK-C108 Threaded Inserts For Metal; Assortment Kit; Carbon Steel; Heavy Wall; UNC Internal Threads, 10-24, 1/4-20, 5/16-18, 3/8-16, 1/2-13; 46 pieces

Used these to rethread a diesel blocks head studs. They have a nice fitment with my snap on tap. They have a nice fit with ARP studs. The selection is nice as well.

Ordered a set of US std and a metric set. Received 2 metric sets in error. Found the barcode/content label was incorrect- it was for the US set but put on a metric (M100) kit. Returned that to Amazon. Hope they sort out the label before reselling it. These are just great for getting a really solid thread in a soft material like aluminum or plastic. Kit comes in handy so you have just the size you need.

E-Z Lok Inserts are great, I use them for a lot of different woodworking projects. The one problem is they don't offer as many thread pitch options as possible. They should increase their thread-pitch options, that would make them a more versatile option.

worked as stated in description. just have to make sure you drill the right size hole for insert

Exactly what I ordered & as describe

Nice kit. First time i used this type was 1983. Glade to be able to get them.

These are truly professional coils. No worries with new thread.Charlie R.

Fast and easy way to replace stripped out threadsJust drill out the threads, re-thread with new tap size and install E-Z LOK

When possible to drill and tap a bigger hole these are by far the best solution. Much stronger than a helicoil and if something happens to your inner threads you can heat them up and remove them and just install new ones.They worked perfectly for my application in cast iron.

This is a high quality kit that met my needs perfectly

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