The set includes 50 M6 Lanview ratchets with corresponding support arms, suitable for installing equipment in 19" server/network racks and cabinets. Made of steel with a gold-plated coating for corrosion resistance. Compatible with M6 threads and standard square mounting holes for shelves. Ideal for supporting rackmount servers, switches, patch panels, and other shelf components. Sold as a single package of 50 pieces (ratchets and screws).