This coal is known for its consistent and reliable performance. Rough Slack is fine pieces of coal that is used to giving a longer burning experience to an open fire. It is ideal for a fire that has poor draft control. The unique rough slack feature ensures that the coal burns hotter and longer than traditional wood, providing a consistent heat source for your industrial setting. High-quality, low volatile coal. Our Rough Slack is carefully screened and hand-picked to ensure the highest quality product. Plus, the convenient 25KG bag makes it easy to stock up on fuel for the season. Order your Capper Rough Slack Coal today and experience the dependable performance that sets us apart from the competition.