Green VILPE Croco fasteners are suitable for different types of insulation layers, as well as other roofing materials. Croco fasteners can be attached using either an adjustable screw, standard screws or concrete nails. This range also includes various screw types and associated accessories; a T-25 (7mm) Torx tool should be used for installation. If installing the product on concrete, an M drill and an M drill extension or similar tools are also needed. The Torx tool and M drill with extension are sold separately. Watch this video to learn how easy it is to install VILPE adjustable fasteners. Find the right product for your needs below: