PL259 connectors are made of high quality Metal which have strong conductivity and are easy to solder. The insulator PTFE can high temperature resistance during welding and will not melt. Perfect for working with 50 Ohm low loss RF cables like RG-8, RG-213, 9913. They also can be used with RG8x, Mini-8, RG-59, LMR240 cable with included -176 reducers. perfect for creating or repairing your own coaxial cables. Widely used in ham radio, antenna or other application like , GPS, LMR, WLAN, WISP, WiMax, SCADA, Mobile Antennas. Package include: 10 Pack PL-259 UHF male plug solder connectors, 10 Pack Reducers. Comes with 10pcs which can much and allow you always have a backup. Colour:silver Material:Metal Package Contents: 10 x PL-259 UHF male plug solder connectors 10 x Reducers Only the above package content, other products are not included. Note: Light 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.