Feature: 1. Aluminum Alloy Material: This super clamp is made of aluminum alloy material for high durability. Non slip rubbers on the inner side provide strength and stability. 2. Screw Mount: With 1/4 inch and 3/8 inch screw holes, both the standard fitting sizes in the photo industry for ball heads and tripods can be used for a variety of attachments. 3. Wide Applications: If equipped with articulating arm, super clamp camera mount can connect a monitor, LED video light, flash, etc. 4. Scope of Application: The maximum fixed range is about 40mm / 1.6in, the recommended range is less than 40mm / 1.6in . 5. Good Workmanship: Exquisite workmanship, beautiful appearance design, small and portable size, providing you great using experience. Specification: Item Type: Super Clamp Product Material: Aluminum Alloy Color: As Pictures Shown Weight: Approx. 67g / 2.4oz Maximum Fixed Size: Approx. 40mm / 1.6in Screw Mount: 1/4 Inch, 3/8 Inch Each. Package List: 1 x Fixing Clip