It seems that the master thread repair kits have been discontinued. I found it at the HF parking lot sale and purchased it and the SAE kit with a 20% off coupon. The quality is good and seems to be the equivelent of the kits sold by Imperial. If you find them at you HF it is a great buy and does what it is made to do.

good deal to get a starter set of helicoil inserts. you never know when you will need these and for the $30 you will spend to buy a single size (if they have it) at the local auto store you can have a whole set. metrics are especially difficult to find