The package includes two 30 cm clamps that can be attached to the tabletop, turning it into a vise. No slipping or annoying holding required. Tools can be placed on the lower shelf to keep the work surface clear. Keter is known for high-quality toolboxes and storage boxes made of plastic. When folding, please make sure to activate the mechanism using the designated levers and do not pull the legs out on your own. The mechanism could be damaged.