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. Show perfect details, with heat sink hole, perfect for heat sink. 3. GPIO Pin: 40 unassembled pins Gold plated connectors Labeled GPIO pins for easy prototyping 53mm cutout length for GPIO Pin male header easy to connect. Please tear off the protective sticker on the case before use. Note: Please tear off the protective film on the acrylic case before use, it will be transparent. Model: for Pi Zero W and Pi Zero Color: transparent Material: Acrylic Package Contents: 4 x Acrylic Case (not include raspberry pi) 4 x Aluminum Heat Sink 4pcs 20pin x 2 male GPIO headers 4 x screwdriver Only the above package content, other products are not included. Note: Light reflection and Different screens may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.