- Size and type: 4 inch Wool Felt Sponge Polishing Pad. Suitable for use with most pneumatic and electric polishing and buffing machines. - Material and design: Adopts advanced manufacturing technology and good material selection. The wool felt is soft and elastic, a natural material that resists shedding. The sponge design helps polish uneven surfaces. - Durability and care: Hook and loop backing is replaceable for quick maintenance. Good adhesion prevents slipping during use. Washable and reusable to reduce operating costs. - Applications: Widely used in manufacturing, repair and maintenance, household appliances, mechanical equipment, precision instruments, and artificial stone industries. Ideal for polishing and waxing paint, repairing defects, surface treatment of metal, plastic, stone, and wood, and polishing paint on wood furniture.