The TWIST Mount EVF Knuckle & Spud with Old-Style SmallHD 1/4″-20 combines a variable-friction 15mm rod mount on one side with a NATO clamp on the other. It features a SmallHD 1/4″-20 stud for attaching compatible accessories. The variable-friction 15mm rod mount allows you to adjust your monitor angle smoothly without the need to loosen the thumbscrew.