SmallRig Super Clamp with 1/4 and 3/8 Thread for Cameras, Lights, Umbrellas, Hooks, Shelves, Plate Glass, Cross Bars, etc Product Feature: VERSATILITY: The super clamp is designed to mount onto anything like cameras, lights, umbrellas, hooks, shelves, plate glass, cross bars, even other Super Clamps. It's up to your imagination & inventive ideas. ADJUSTABLE JAW: The jaw opens to max about 1.57" (40mm), and minimum 15mm. You can clip it on anything less than 40mm thick and more than 15mm. FOR MORE ACCESSORIES: The clamp features 1/4 threaded holes and 3/8 threaded hole, which allow you to attach more accessories, such as ballhead 1135, magic arm 2070. High-Quality: Made of aluminum alloy and stainless steel, sturdy and durable. BETTER PROTECETION: The updated rubber pads on the clamp parts prevent your application from slipping and scratching. Product Specification: Product Dimensions: 72.5 x 30 x 18mm Accessories with diameter 15mm-40mm Net Weight: 0.13kg You Get: 1 x Super Clamp Before you place an order, please provide me with English information to facilitate our delivery and logistics