Timco Slab Nails - Galvanised (200 x 4.50mm) 10kg Box (SLN200) Used for securing insulation to wood. Used for securing insulation to wood. Conforms to Eurocode 5 and service class 2. For medium duty rust protection. 100 x 3.35mm (500g) 125 x 3.75mm (500g) 150 x 3.75mm (500g) 180 x 4.50mm (500g) 200 x 4.50mm (500g) 100 x 3.35mm (1kg) 125 x 3.75mm (1kg) 150 x 3.75mm (1kg) 180 x 4.50mm (1kg) 200 x 4.5mm (1kg) 100 x 3.75mm (10kg) 125 x 3.75mm (10kg) 150 x 3.75mm (10kg) 180 x 4.50mm (10kg) 200 x 4.50mm (10kg)