BNC connector for HEKA Co. headstages for 1.5mm glass. Supplied with 2 spare O-rings and 4 spare wire seals. Polycarbonate, P.T.F.E. and BNC fitting, Length: 50mm, Diameter: 9mm The BNC connector is specially made and is competely rigid with the rest of the holder so that movement of the holder is practically eliminated once connected to the headstage. The extra long specially made gold plated pin is designed such that your wire connection requires no soldering, as in our other holders.