WAGO 7-Way PCB Spring Terminal Block 3.5mm Blue/Grey – WAGO 250-107, This grey WAGO 7 pole, 1 conductor PCB terminal strip has a pin spacing of 3.5mm. The front entry wiring uses WAGO’s push-in Cage Clamp technology and has pushbutton release. The strip has a slot for a test plug of diameter 1.3mm. WAGO 250-107 7-Way PCB Spring Terminal Block Grey