One end has a 1/4"-20 threaded connection with a telescopic pin to effectively prevent the device from deflecting.
Nato clamp
1/4"-20 Screw Magnetic Wrench Stretchable Pin Billows One end has a 1/4"-20 threaded connection with a telescopic pin to effectively prevent the device from deflecting. NATO Clamp
PurchaseSmallRig Magic Arm with Dual Ball Heads (1/4-20 Sc...