2pcs， Adjustable Bosshead Clamp Holder, Lab Heavy Duty Boss Head Clamp Holder Aluminum Alloy Body, up to 13mm Rods for Laboratory Use

Right angle bracket: commonly used for chemical reactions, filtrations, and experiments in laboratories, factories, schools, hospitals, research, and so on. Boss head clamp holder: strong in support, alloy made clamp holder can support more than these plastic made clamp holders.Accepts rods up to 16mm diameter Made of Aluminum Alloy body with plastic knobs, ensuring it durable and sturdy constructed Large; easy-to-rotate knobs help provide extra leverage to easy and accurate adjustment Widely used in labs for keeping the clamp in place Accepts rods up to 21mm diameter Made of Aluminum Alloy body with plastic knobs, ensuring it durable and sturdy constructed Large; easy-to-rotate knobs help provide extra leverage to easy and accurate adjustment Widely used in labs for keeping the clamp in place