1, Screw Mount 52Amp 300V 2 Position Screw Terminal Block Distribution Module. 2, Terminal Block: Maximum current 52 Amp (each position). Maximum voltage 300V. Pitch 10.16mm/0.4", Wire range 20AWG ~ 6AWG / 10mm square. Strip length 10mm. Screws - M4,steel, Cr3+ Zn plated. Pin header and Cage - Brass. 3, High quality fireproof nylon material mount carrier. Also included are two M3 x 10mm wood screws, you can easily mount it on a wooden board. 4. FR-4 fiberglass dual copper layers PCB 5, UL CE CQC certified terminal blocks. UL CE certified nylon material mount carrier. UL 94-V0 certified PCB. 6, Operating Temperature Range: -40 to +105C.