Product Description: Advantages: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Made of synthetic rubber.4.Insulation material, anti-flaming, , high environmental protection, anti-corrosion, anti-aging.5.Suitable for high and low voltage electrical cabinets, cabinets, outlets, to protective wires, not scratched by the cabinet. Specifications:Material: Synthetic RubberColor: BlackOverall Size: approx 30 x 16 x 10mm/1.18 x 0.63 x 0.39 inch(L x W x H)Inner Size: approx 25 x 10 x 5mm(L x W x H)Groove Size: approx 26 x 12 x 3.5mm(L x W x H)Weight: 51gAttentions: Please allow 1-3mm error due to manual measurement. Package include:20 x Wiring Grommets