Name: Screwdriver head Material: Aluminum Color: Blue/Red/Yellow size: 2.4*1.5*1.2cm(0.94*0.59*0.47in) Package includes: 3pcs screwdriver headsFeatures: Magnetosphere locking screw, tight bite, reduces unnecessary slip by 85%. Magnetic force increased 10 times, more powerful clamping, do not fall off to improve efficiency. Magnetic ring fits for all kinds of 6.35mm shank screwdriver bits. Removal design, easy to install and remove. Note: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee that the style is the same as shown in the pictures. 2.Allow 1-3mm(0.04-0.12in) error due to manual measurement and there will be different colors as different screens, please understand.Thank you