Package Included: 10 x Plastic Connector Pins and 10 x Swimming Pool Spare Parts Gasket. The seal prevents water from entering the frame tubes and causing rust from the inside out, extending the life of your pool. Reliable Material: These pool connector pins and sealing caps are made of high-quality durable ABS material, which can withstand daily use and are not easy to break, sturdy and durable. Easy to Install: Just remove the damaged connecting pins and install the new parts in your 4m metal frame pool; no additional tools are needed. Practical Design: The long spindle connects the T-joint to the round pool tube, and the seal prevents water from entering the frame tube and causing rust from the inside. Blends perfectly with the original metal frame above ground pool. Wide Application: Our pool connection pins are suitable for most pools with rectangular metal frames in summer.