Explosion-proof needle nose pliers, also known as repair pliers, but also electrical (especially inside electrician) one of the tools used mainly for cutting smaller diameter multi-strand single-stranded and single-strand wire and wire connectors to bend circle, plastic insulation stripping and gripping small parts, etc. Material: materials are bronze, aluminum bronze appearance features: pliers in together is tapered when the main dimensions: 6-inch bronze products are two national Class C-Class for 21% of the hydrogen gas does not detonate bronze explosion proof instrument performance parameters: the standard code GBEx Ⅱ C, hardness of HRC35 or more, tensile strength b105-120kgf/mm m; aluminum bronze products is a national second-class B, for 7.8% of ethylene gas does not detonate; aluminum bronze explosion proof instrument performance parameters: the standard code GBEx Ⅱ B, hardness of HRC25 or more, tensile strength b75-85kgf/mm ㎡.