Kaisi KS-1726 24 in 1 Multifunctional Precision Screwdriver Set 1. The case was made of industrial plastic and the cover of product was made of transparent PC matenials. 2. This product is with flexible lock catch design which is not easy to break off. 3. There is one special stored case which was designed in case interior,it can saved small screws or small parts to avoid loosing when you are in operation. 4. Elastic aluminium alloy handle.One steel extended rod was built-in screwdriver handle inner,it canextend according the using requirement. 5. It is with the design of space aluminum skidproof stripe to anti oxidation and skid,fine and smooth lines is keeping a high slip resistance and avoiding hand pricking. 6. There are independent stuck position for each screwdriver tip to flx them perfectly and avoid waggle and lose. 7. The screwdriver tip was made of S2 alloy steel with HRC 58-61 degree handness.The designed of 4.5cm extended rod is very convenient to dismantle the screws on deep hole. 8. Suitable for mobile phone ,laptop, tablet PC game machine and other electronic products. 9. Bit size: 1.01.52.03.00.81.2T2T4T5T6T8T10T151.21.52.03.02.3H1.2H1.52.50.62.02.6