Sliding lock for square profile - Clamping lock for square profile - Materials: High pressure die-cast zinc body, chrome-plated Button in black or orange thermoplastic polyamide Stainless steel locking pins and wedges Phosphated bronze leaf spring - Temperature of use: Max. 90°C Advantages - Allows locking or unlocking without tools and without screws by simply turning the button - Saves time by avoiding the handling of tools. Accessories - Blocking wedge VDSQ-CB - Can be used with a ruler with groove (not supplied).