Standard materials - Copper + PVC + Tinplate. Wire range: AWG 22-16 (red), AWG 16-14 (blue), AWG 12-10 (yellow) Package Contents - 7000 Pieces Wire Terminals - Ring, Fork, Butt, Semi Insulated Male Spade, Semi Insulated Female Spade, Fully Insulated Female Spade, Male , Female , Piggyback Crimp Terminal Connectors. Sturdy copper tubing holds the wire tightly while crimping. Copper is an extremely strong conductor of electricity that can easily withstand a range of temperatures and resist . VARIOUS APPLICATIONS - Convenient terminal connector assortment has everything you need for quick solderless electrical repairs in your home, garage, workshop or outdoors. Colour:blue+red+yellow Material:Copper+PVC Package Contents: 700 x Wire Terminals 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.