Croco B Fastener

Steel structure: fix with a KLA Drill point screw
Wooden structure: fix with a KLA Drill Point screw or an Adjustable Croco screw 95
Concrete structure: fix with a Concrete screw or KLA Concrete nail, or with an Adjustable Croco screw (95 or 150)

Alter Croco length with adjustable screws
The Croco A and B fasteners with adjustable screws make roof installations easier and faster, as the length of the fasteners can be easily adjusted to follow the roof slope. The risk of mounting errors decreases as the fasteners can be adjusted according to the thickness of the roofing and insulation materials. One fastener model covers a wider range of insulation thicknesses.
A T-25 (7 mm) Torx tool is used for installation. If installing the product on concrete, an M drill or similar tool is also needed, as pre-drilling is required. An M drill extension is also available. The Torx tool and the M drill with extension are sold separately.