Easy installation Designed to work with long lock joint pins installed on round 13 - 24 inch metal frame pools. Simply replace broken or missing pins and no additional tools are required. What you get and how it works - Includes 12 joint pins and seals for pool replacement parts. - Long joint pins connect T-connections to the round frame tubes. - Seals prevent water from entering the frame tubes and rusting. Material and durability - ABS material: high-quality ABS designed to withstand daily use, helping keep your pool in good condition all summer with reliable joints and seals. Compatibility and specifications - Pins part number: 10312 - Product size: 6 cm (length) x 0.8 cm (diameter) - These plastic joint pins and seals are for metal frame pools - Compatible sizes and frames: - 10ft x 30in (2016-19) - 12ft x 30in (2016-19) - Prism frame: 10ft x 30in (2016-19) - Prism frame: 12ft x 30in (2016-19) - 12ft x 39in (2019) - 13ft-24ft (2015 and earlier) If you accidentally order the wrong size, a full refund is available at any time. Use scenarios - Replacing a broken or missing pin on a round metal frame pool to restore structural integrity without tools. - Seasonal maintenance for prism frame pools to prevent leaks and corrosion at joint connections. - Quick repair of T-connections where a secure connection to the frame tubes is required, keeping the pool frame rigid during use. Warranty and service - If the size is incorrect, you can request a full refund at any time, ensuring you get the right parts for your pool.