Premium Material: The quick wiring connection terminals are made of quality thickened copper material for strong conductivity, better heat dissipation and good stability, having long-term service life. Easy to Operate: Prepare the stripped cable, then put the cable into the shrink tube, insert the cable and tighten the screws with the wrench, then heat the shrink tube to complete the wiring. Accept fast voltage-free wire: Our fast voltage-free wire terminal block is suitable for fast voltage-free wireconnections, ensuring a correct fit and secure connection. Multi-Purpose: Our wire connector nut kit is widely used in home appliances, automobiles, power industry, mechanical equipment, etc. It's a practical and useful tool and tool box. Color:As Shown Material:Copper Package Contents: 10 sets * brass terminal 10 * triple heat shrinkable tube 1 * hexagon wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.