Lightweight design: small size, current resistance. The humanised semi-circular tail seam connection is arranged 180 degrees outwards to make welding work comfortable. : made of gold-plated brass and PA66 insulation material, high temperature resistant nylon material and gold-plated round connector, nylon and gold-plated spring connector. of application: provides a strong high current connection, perfect for applications up to 20A and more, for RC batteries drones vehicles. Rated voltage: DC 500V, rated current: 15A, short time current: 30A, recommended temperature: -20Celsius ~ 120Celsius. Colour:yellow Material:Copper+PA66 Package Contents: 15 pairs x XT30U battery plug and socket 30 x black heat shrink tubing 30 x red heat shrink tubing Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.