without this special screwdriver i would have been able to replace the smaller hard drive on a starchoice dsr530 hard drive with a bigger one. the tool box has the motorola driver bit to take apart the box. it also has the rubber plastic that breaks when you remove the lid. once you have the screwdriver and special tools, All there is to do is to just unscrew security screw to remove the casing. Find the hard drive and unscrew the heat sink that keep it cool. the screw for mine were on the sides and there are more screws on the bottom to remove drive altogether. I found everything I needed in the black tool box case. the t-handle helped me add a little force to remove the heat sink because there seemed to be some glue or something on there. the only thing i had to order separately is the tamper stickers. i'd like to see them in the tool box since you have the tamper clips in there. otherwise, i am happy with everything. fast shipping and good csr.