brand new and high quality Feature: Made of hard metal material, practical and durable to use. Used to fix the back for shell of a laptop. Applicable Model: Suitable for MacBook pro. Replaceable Accessories: Necessary items for laptop repairs. Easy Install: Easy to install and remove without damaging your laptop. Hard drive screw only, other accessories demo in the picture is not included! Specifications: Item Type: Hard drive screw Material: Metal Color: Silver Compatible Models: for MacBook pro Quantity: 20 PCS Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 01cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 20 x Hard drive screw