STP 4-2 - Marker carriers

Marker carriers, snaps into ST 1,5... spring-cage terminal blocks, can be marked with UC-TM 4, UC-TMF 4, UCT-TM 4, UCT-TMF 4, ZB 4, or ZBF 4, gray, unlabeled, mounting type: plug in, lettering field size: 4 x 10.5 mm