Nasco signs an authorized agreement with United Abrasives What makes ours different? They last longer. Unlike many abrasive manufacturers, we only use premium grains, and we never use inferior fillers or bonding agents. With durable abrasives that continue to perform over time, you can avoid frequent re-orders and costly downtime.They’re safer. Our product line doesn’t include cut-rate abrasives because, frankly, cut-rate abrasives are accidents waiting to happen. When you’re buying United Abrasives, you’re buying the best.