Sufficient : you can get 60 pieces of 2.8 mm solid silver pencil refills in 10 boxes in each package, 6 pieces per box, sufficient allows you to replace your carpenter mark pencils in time to make smooth and clear lines to avoid drawing again and again, improving your work efficiency; You can also share with your colleagues Clear and Obvious Color: our deep hole mechanical construction pencil replacements adopt silver ink, which can make it more clear and obvious to look when marking darker surfaces; Due to the pencil replacements are less erasable, you can also to mark a variety of surfaces with Work Without Worries: these mechanical pencil refills made of quality metal material are strong and sturdy, will not break and fade easily during the woodworking, drawing or marking process; You can complete your work effortlessly without worrying about accidents at work Apply to Various Surfaces: pencil refills for carpenter mark pencils can be applied to various surfaces with quality material and less erasable feature, including oily, rough, smooth, wet, dry, icy and rusted surfaces, suitable for construction, woodworking, architect drawing and so on, meeting needs in your Versatile Applications: our colored pencils refills have a wide range of application, befitting for scribe tool, carpenter pencil, carpenter , engraving tool, glass , glass engraving and more, you can your creativity to make more combinations for more functions Colour:silver Material:graphite Size: 2.8 MM Package Contents: 60 x pencil refills(6 pieces per box) Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.