Pack of 100 light grey screw covers designed to fit 10-12 gauge screws or 5-6mm size screws : Amazon.com.be: Tools & Home Improvement
Pack of 20 - Dark Grey Hinge Screw Cover CAPS, Designed to FIT 10-12 Guage Screws OR 5.0-6.0MM Size Screws, Free UK DELIVERY : Amazon.co.uk: DIY & Tools
How to Read a Screw Thread Callout: 12 Steps (with Pictures)