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 interface, which allows for easy disassembly and replacement. The interchangeable tip of the universal inkless pencil is convenient to use, helping you easily write, draw, make detailed illustrations and shadows, add texture, and more. These black inkless replaceable nibs are odorless and safe to use, making them a suitable gift for kids, students, teachers, and colleagues for occasions such as birthdays, Christmas, Halloween, decorations, stage props, and other special events. Package includes 30 pieces of everlasting pencil replacement heads, sufficient for your daily study, office, and drawing needs, and ideal for sharing with family and friends. These inkless pen everlasting pencil replacement nibs are practical accessories for study and office use, widely applicable for writing, drawing, note-taking, diary entries, notes, scrapbooking, and various art projects. 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. Ensure you are comfortable with this before purchasing. 2. Due to differences in monitor displays, the picture may not reflect the actual color of the item. Thank you.