The Sachtler Adapter Viewfinder Extension 12/15 is an accessory for Sachtler DV 12 SB and Video 15 SB fluid heads. It provides a 20 mm extension height and has a length of 21 mm. The adapter weighs 0.04 kg and is intended for viewfinder positioning within compatible camera support configurations. No material, mounting interface, load capacity, or adjustment mechanism is specified.