--earthing clamp as per bs 951 standards detailed under: -- Regular / Running Models type: - Ec 14-1, 15-1 & 16-1 applicable to dia 12-32mm Ec 14-2, 15-2 16-2 32-50mm Ec 14-3, 15-3 16-3 50-75mm Series: 14 series is suitable for clean dry atmosphere 15 16 are all environments. Terminal ...