The seepage line oldening wiper pen is a precision tool for marking smooth, clear lines on hard surfaces like metal, ceramics, and glass, giving you full control for detailed work. Designed to glide effortlessly like a pen, it scratches and marks wood, stone, and tile with ideal accuracy. Its versatile design works seamlessly on jewelry, rings, and tags, ensuring clean permeation without smudging. Compact and lightweight, this pen-sized wiper is easy to carry and use anywhere—ideal for ceramics, rock, or tile. Engineered for hard materials like glass and metal sheets, it delivers crisp, sharp lines every time, making it an essential tool for professionals and hobbyists alike.