The bnc connector is used to connect the cctv camera to the digital video recorder (dvr) via rg59 cable. it is also known as screw-on bnc connector, as it has a screw terminal where the copper core of the rg59 cable is attached to.
product name : bnc connector
material : metal
plug type : bnc male; color : silver tone
dimension(each one) : 6.3 x 1.4cm/2.5" x 0.55"(l*d)
package content : 50 x bnc connector