The Prym Chalk Wheel "Mouse" offers effortless and precise marking for all types of fabric. Its ergonomic design ensures comfortable use, while the fine gear tip creates clean, thin chalk lines that can be easily brushed or washed away. A transparent window shows when it's time to refill with available white or yellow chalk cartridges. Compact and user-friendly, this award-winning tool is perfect for both detailed work and everyday sewing projects, making it an essential addition to any sewing kit.