Ever had a model crash because a servo became unplugged from an extension lead? Never have that worry again, use one of these security locks to stop the plug and socket parting company, especially useful when leads are buried inside wings or down inside an inexcessible part of the fuselage.
Also perfect for helicopters where there is a lot of high frequency vibration which can cause plugs and sockets to gradually work apart without you noticing.
Suits JR and Futaba style of plugs and sockets.
Hmotnost ( g )