The CA-PSA-ALX-CL 5 IN 40G PK50 from Field Tool Supply is a pack of 50 adhesive-backed aluminum oxide sanding discs, measuring 5 inches in diameter. Designed for efficient sanding and finishing, these discs feature a 40-grit surface that provides aggressive material removal while maintaining a smooth finish. Ideal for woodworking, metalworking, and automotive applications, these sanding discs are compatible with various sanders. The durable construction ensures long-lasting performance, making them a valuable addition to any workshop or toolkit.