Feature: 1. Made of non‑recycled flexible rubber, sun‑proof and high temperature resistance, not easy to crack 2. Processed in accordance with national standards, possess good electrical conductivity and insulation 3. Socket made of good‑quality insulating rubber material, which has good insulation and has a certain anti‑drop effect 4. Fixing screws are all galvanized, which is moisture‑proof, radiation‑proof and not easy to rust 5. Applicable cable cross‑sectional area for 35‑50mm², very practical to meet your needs Specification: Item Type: Quick Coupler Socket Material: Rubber and brass Purpose: Suitable for electric welding, argon arc welding gas shielded welding machine Connection Method: Docking Inner Diameter of Socket Jack: Approx. 13.5mm / 0.5in Thickest Outer Diameter of Rubber Sleeve: Approx. 34.5mm / 1.4in Applicable Welding Machine: 315 and part 250 Rated Current: 315A Cable Cross-Sectional Area: 35-50mm². Package List: 1 x Socket1 x Plug1 x Connector