Features: Shell is make of Plastic, which is flame retardant and highly temperature resistant, reduces potential safety hazards, and is resistant to aging and corrosion. Conductives strips make of Coppers materials, it have strong conductivity and is not easy to rusts and corrosion. Stainless steels spring buckles have strong elasticity and is not easy to loose and fall down. Simple operate: easy wiring, plugs and press, fast wiring. Fast wiring: safe plugs designs, wide wiring ranges, no need to worry about wire diameter, type, model. Usage: Used to connect wire, electrical control, power supply, household appliances, lighting, machinery and other part. Specifications: Materials: Plastic Size: as shown in the picture Applicable wire: hard wire 0.5-4.0mm², soft wire 0.5-2.5mm² Package Includes: 35Pcs 2-port inputs 25Pcs 3-port inputs 15Pcs 5-port inputs note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.