High quality Material,protect your Pi safe 1. 4 in 1,perfect for raspberry pi zero w and pi zero 2. Acrylic case, easy to install. Perfect show details,with heat sink hole ,perfect for heat sink. 3. GPIO Pin: Unassembled 40 pins Gold plated connectors GPIO pin which are labeled for easy prototyping Length of 53mm cutout for male GPIO Pin header that it can easy to connect. Please tear up the protective film sticker on the case before use it. Raspberry Pi is NOT included Note: Please tear up the protective film on the surface of acrylic case before you use it , and it will be clear transparent. Model: for Pi Zero W and Pi Zero Colour: transparent Material: Acrylic Package Contents: 4 x Acrylic Case ( not include raspberry pi ) 4 x Aluminum heat sink 4pcs 20 pin x 2 Male GPIO connector 4 x Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.