Malmsten connector/disconnector paired with pin. Two bronze details joined/divided with a stainless steel pin. Sold in pairs including pin.
 
Malmsten connector can be assembled on the wire of racing lanes for example to divide 50 m wire into two 25 m wires. This Connector can be placed according to demand onto the 50 m lane line when placing the order.
According to international competition rules it's not possible to use one 50 m line divided in two 25 m lines during competition due to 15-m lanes marks.