General description These light-duty nylon hammer fixings are ideal for securing timber to various masonry substrates, including concrete, brick, and block. The countersunk head ensures a flush finish, providing a neat appearance. Technical specifications Driver Bit Size: PZ2 Plug Size: 5 x 30mm Screw Size: 3.3 x 35mm Material: Carbon Steel with Zinc finish Usage Suitable for clean and dry environments.