A rough adjustment is made by releasing the spring loaded lock and sliding the adjustable half of the clamp over the serrated bar. Final tightening is done with the worm screw handle. The adapter slides over the bar and tightens with two thumb screws.

 

https://www.bhphotovideo.com/c/product/33190-REG/Matthews_429584_Furniture_Clamp_5_8_Clamp.html

Matthews Furniture Clamp with 5/8" Bar Clamp Adapter - 12"

₱300.00Price