The Pulsar® 71925 5/8" x 32mm 8-Pack PVC Screws for Pulsar® 4 Pool Maintenance System is 4-pack collection of screws (8 per set) intended to repair or replace the original PVC screws of the Pulsar® 4 pool maintenance system. This four pack of screws helps to secure and hold the mounting plate component of the system. For best results, always refer to manufacturer directions for repairing, replacing, or adding components to pool maintenance systems.