A replacement piece to hold the bits for a Mastercraft screwdriver. One of the tabs broke off of mine, making it so one of the bits always fell to the floor when I opened it up. This replacement piece is best printed in TPU with the current scaling in order to get a nice snug fit. You can print it support-free, but I added supports with a 0.24 roof using a 0.4 nozzle printing it with the bit channels running up and down.