These are replacement inserts only for the Parbuster 5x6 High Density Golf Hitting Mat WITH interchangeable insert hole. This product is intended for golfers who already own the insert-compatible mat and want to replace worn hitting surfaces after extended use.
The insert-compatible mat is designed with a factory-cut hole that allows inserts to drop in securely. The standard solid 5x6 High Density Mat (no hole) cannot accept inserts and is not compatible with this product.