These are usually used to hold a wood or metal workpiece and are often used on carpentry and welding. At the top is usually a small flat edge. At the bottom is a threaded hole through which a large threaded screw protrudes. It is used by turning the screw through the bottom of the frame until the desired state of pressure or release is reached.
Member Since 7 Years
Nature of Business Retailer
For Buyer 
For Seller 
Help 
MIDC, Satara, Maharashtra