The BJB 26.422.4109 is a non-shunted T8/T10/T12 lampholer/socket/tombstone for fluorescent or LED tubular lamps. It has a rotary lock that locks the lamp in place and a spring to secure a tight connection. The BJB 26.422.4109 has rear split pins for mounting and "quick connect" wire connections to make wiring easy. It is a G13 medium bipin base rated at 660w and 600v.