Review on 🔧 Helicoil 5521-7 Thread Repair Kit: Restoring Coarse 7/16-14 Inch Threads with Precision by James Nedumaran

Included bits are 1/2 inch long. I bought this kit and went to an industrial stocked house online and bought 7/8 inch inserts. It's very important that the hole and threads are straight, so I used a head with several screws as a guide for the drill that goes into the head. Then I drilled through a 1" piece of plastic with the same bit and used the included tap to remove the threads on the drill press. First, attach the plastic to the table of the drill press. Start the faucet and slowly lower it .Into the plastic without cutting it.The resulting hole fits snugly to allow the tap to be oriented square to the block.Press the plastic block over the hole and tap.