Features: This Infinity pencil replacement refill is made of quality material, strong and not easy to break, smooth writing and easy to erase; it is designed with a screw interfaces, which can be easily disassembled and replaced. The interchangeable tip of the universal inkless pencil is very convenient to use, helping you easily write, draw, make detailed illustrations and shadows, add texture, etc. These black inkless replaceable nib is odorless and safe to use, perfect gift for kids, students, teachers, business friend birthdays, Christmas, Halloween, decorations, stage props, special occasion, etc. Package includes 30 pcs everlasting pencils replacement head, enough for your daily study, office and drawing use and replacement, you can also share it with your family and friend. These Inkless pen everlasting pencils replacement nib is good accessories for study and office, they can be widely used for writing, drawing, note-taking, diary, notes, scrapbooking and other art project. Specifications: Quantity: 30 Pieces Material: Brass Type: Style 1; Style 2; Style 3; Style 4 Size: Approx. 1.5cm/0.59in Weight: Approx. 16g Package Includes: 30 Pieces Inkless Pencil Refills note: 1.Please allow 0-1cm error due to manual measurement. make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you