[Upgraded Design]20Pcs RG59 BNC Compression Connector with fixed pin, you can insure the wire goes into the connector more , easier and quickly,doesn't bent, other raditional bnc connector. Connector very easy to use to -59 coaxial siamese cable, just use the cable core insert the compression connector pin and compress it. [How to Use Crimper Tools]Please make the tool for the measurement for these connectors,then tighten the connectors with cable, making the connection successfully is easier. 20PCS BNC Compression Connector works with most standard compression tools. [Widely Application]RG59 connector suitable for use in the cctv home security camera installation, theater, audio & video cable, made to work in any weather condition, for indoor/outdoor use. Compatible with all CCTV analog, AHD, TVI and SDI home security high-definition camera surveillance system. [Weather Resistant] Heavy-duty constructed DC barrel BNC connectors HD video cables for coaxial RG59 720p, 960P, 1080p CCTV AHD and SDI HD video cables connection. Extremely low signal attenuation construction, -corrosion -plated, All metal fully sealed-watertight,improved conductivity, permanent connection never comes loose. Colour: as shown Material: Metal Package Contents: 20 x RG59 BNC Compression Connector (with 20Pcs Copper Pin) 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.