1. Material: chrome vanadium alloy steel 2. Purpose: screwdriver for removing cassette 3. Application: suitable for Nintendo N64/SFC/GB/NES/NGC, etc. 4. Standard: metric 5. Specification: 3.8/4.5mm 6. Length: the blade is about 75 cm, and the total length is about 15.5 cm 7. Weight: about 45g/piece