1, Screw Mount 30A/300V 20 Position Screw Terminal Block Distribution Module. 2, Terminal Block: Pitch 7.62mm/0.3", Strip length 8mm. Screws - M3,steel,Cr3+ Zn plated. Pin header and Cage - Brass. 3, Wire range 26AWG ~ 10AWG / 4.0mm square. Rated voltage 300V, rated current 30Amp(per position). 4, Taiwan High quality fireproof nylon material mount carrier(not China low quality carrier). Also included are two M3 x 10mm wood screws, you can easily mount it on a wooden board. 5, External dimensions: L175mm x W48mm x H37.3mm / 6.89" x 1.89" x 1.47"