Hello! How many quantities of the product model SIMATIC S7-1500, Spare Parts Shielded Kit Components: * 4x Shielded Terminals, * 4x Shielded Brackets, * 4x 24V DC Power Supply Elements, Embedded Technology Suitable for Analog Components, Process Components, and the Compact CPU of the S7-1500, Fits All Front Panel Connectors For 25mm Wide Modules do you need?