Specifications: The kit contains prototype printed circuit boards, wiring boards, and female sockets. The structure is compact and consists of screw terminals, high-quality printed circuit board carriers, and FR-4 printed circuit boards. The terminal module adopts high-quality materials and undergoes fine process treatment with long service life. It is not assembled and can be used flexibly with various installation methods. Type: Shield Board Kit Material: PCB Shield Compatible for: for Arduino MEGA-2560 Features: High Performance, Shield Module, Durable Size Details: Circuit Board Size: 12.024cm x 7.72cm/4.73" x 3.04" (Approx.) Pads Grid Pitch: 2.54mm/0.1", Hole Diameter: 0.8mm/0.03" (Approx.) Wiring Board Pitch: 3.5mm/0.12", Hole Diameter: 1.2mm/0.05" (Approx.) Terminal Block: Pitch: 3.5mm/0.12" Mini Terminal Blocks, Total 84 Pins (3 Pins x 24Pcs, 2 Pins x 6Pcs) Female Header Socket: Pitch: 0.1"/2.54mm, Pin Length: 15mm/0.59" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Circuit Board 7 x Pin Headers (Single Row: 10 Pins x 1Pc, Singal Row: 8 Pins x 5Pcs, Dual Row: 18 Pins x 1Pc) 30 x Pins