The New Hyper Tough 77 piece TECH KIT is great for those projects where you need precision. Whether you are working on your cell phone . computer or any electronics this kit has the tools you need. Bits are all made of CR-V steel . Which guarantees long-term use with good toughness . strength and durable. And all of those bits are put through strict quality testing. Every bit is standard size. The magnetic tip on the screwdriver is very convenient when pulling screws out or lining up screws with the hole. With a plastic case . this set is complete and compact enough to easily carry everything with you either to the bench or a work site. You can repair much faster and smoother with these tools. Check out the whole line of Hyper Tough Tools at your local Walmart or on Walmart.com