The Birchwood Casey Super Black Touch Up Pen is an easy and effective way to touch up nicks, scratches and worn areas of black anodized aluminium or black painted surfaces. The pen contains a fast-drying, lead-free paint with superior adhesion and durability that helps fill in deep scratches or worn areas. These special formulations are for use on highly polished and matt finished alloy gun receivers, trigger guards, scopes, binoculars, cameras, flashlights, fishing reels and other sporting accessories. Use like a marking pen with no mess simply rubs on like a felt tip.