Portable style with perfect shape It won't damage the shelled-wire and works with high efficiency The mouth of the press-pliers is made of magnanic steel ,which is hard and durable While using press-pliers,just insert the cystal top into its position and press it. For 4,6,8poles mudular connection Specifications: Net weight: 335g Unit Dimension: 195*70mm Packing Dimension: 260*130mm