4mm x 50mm Fastfix Multifoil Screws - box of 200

4mm x 50mm Fastfix Multifoil Screws - box of 200 - high performance specially designed for multifoil insulation, sawtooth design which prevents the wooden battens from splitting. 40-degree deep single thread creates resistance to the screws being pulled out and creates a secure hold.

• Easy to use,
• 40-degree deep single thread - creates a secure hold,
• Sawtooth design - prevents wood splitting,
• Lubricated, 
• Fully threaded the whole length of the screw.