CamBlock Plus 7.5mm Pitch Horizontal Male Headers with Open Ends – CamdenBoss CTBP9550/4AO, Pluggable 4-pole male horizontal terminal block with open ends from the CamBlock Plus range by CamdenBoss. These green blocks are made from flame retardant polyamide. CamBlock Plus CTBP9550/4AO 7.5mm Pitch Open End Male Header Horizontal 4 Pole