General description A pack of 100 security screws designed to prevent number plate theft, featuring a yellow flip top cap. These clutch head screws provide a permanent, one-way fixing for enhanced security. Technical specifications Size: No. 6 x 20mm Material: Stainless steel with a plastic moulded cap Cap colour: Yellow Other information Security screws with different colour caps available: 30633 (white), 30635 (black), 30636 (blue)