Hi, I am the person who made the systainer insert for the chissles with the blue handles in the photos. I made an insert for hole saws and Forstner bits also, one of the photos here show all three together. I made three extra of each insert to see if there was a demand for these inserts. I tried to sell them on eBay and etsy but hard to sell at my asking price of 70.00 and free shipping. I kept dropping the price until they were all gone and finished my market test. Nobody (almost) will pay more then 20 bucks for it. You never know if you don't try. I love the inserts and hope the people who bought them like them too. Thanks, Scott