This high-quality chalk refill by Irwin is perfect for all your marking needs. With a weight of 5 lbs, it is sure to last you a long time. The red color is easy to see on any surface and will make your markings clear and precise. The refill works with most chalk line reels, making it a versatile addition to your toolkit. And with the added bonus of the battery being included, you can start using it right away. Ideal for both personal and professional use, this chalk refill is a must-have for anyone who wants to get the job done efficiently and effectively.