QUICK: Electrical nuts are great for connecting wires, no soldering required, just the stripped conductor into the wire cover and tighten. Safe and : The linear connector grips the wires firmly and forms a solid connection, and the spring inserted into the flame-retardant shell has good insulation and minimal aging. Saves time: Pre-twisted wires are not required, but we recommend twisting the wires first to make a more reliable, tighter connection. Applicable wires: 26 gauge - 10 gauge wire. Colour:As Shown Material:abs Package Contents: 1 set * wire connector nut kit (320pcs)(The color is random, no specification is accepted, and it does not affect the use) 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.