Package Included: 10 x Plastic Connector Pins and 10 x Swimming Pool Spare Parts Gasket The seal prevents water from entering the frame tubes, helping to prevent internal rust and extending the life of your pool. Reliable Material: These pool connector pins and sealing caps are made of high-quality, durable ABS material, designed for daily use and resistant to breakage. Easy to Install: Simply remove the damaged connecting pins and replace them with the new parts in your 4m metal frame pool—no additional tools required. Practical Design: The long spindle connects the T-joint to the round pool tube, and the seal helps prevent water intrusion into the frame tube. Designed to match the original metal frame of above-ground pools. Wide Application: These pool connection pins are compatible with most rectangular metal-frame above-ground pools.