Pica Dry Special Refill Lead for Joiners, 10PK contains 10 high-quality leads neatly stored in a durable plastic box designed with a convenient two-piece wing lid for easy access. These leads are for marking on most dry surfaces and are especially i for wet cutting applications involving tiles and stone. Each graphite lead measures 2.8mm in diameter and 125mm in length, providing precision and reliability for joiners and other professionals. The compact storage box ensures your leads stay protected and ready for use whe you need them. Model Number: 4050