BENRO A-158M8 Aluminum Tripod Dust and rubber-resistant leg lock design prevents dust or moisture from entering the interior of the leg twist-locks. Anti-twist leg sections and a grooved center column make setup and breakdown quick and easy. The set screw in the camera platform can be used to permanently secure a head to the tripod, providing additional security. The retractable spring-loaded hook can be used to add stability with a sand bag or equipment bag. Magnesium Components are 30% lighter than the cast aluminum ones, and provide excellent stability.