This set includes four premium mechanical pencils, four tubes of replacement leads, and four replacement erasers. The GraphGear 1000 is the superior drafting pencil for professionals and enthusiasts. You can easily identify your lead type with the built-in lead hardness indicator. The 4mm tip length is ideal for use with rulers and templates, and fully retracts when not in use. The finely chiseled metallic grip is inlaid with soft latex-free pads.