SmallRig Aluminum Alloy Pair of 15mm Rods (M12-4inch).
SmallRig Aluminum Alloy 15mm Rod Pair (M12-4 inch) 1049 could extend various 15mm compatible accessories to your camera rig with M12 internal thread at the ends.
The rods are made of highly reliable aluminum alloy and have a good abradable and anti-caustic coating.
However, it is much brighter and stronger than the original industry standard rods.