[Premium Material] Made from high quality PVC material for durable long time use.Center fin, kayak skeg tracking fin mounting points board canoe for inflatable stand up paddle sup boards surfboard & paddleboard. [Balance Stability] It is glued to both sides of the plate surface to assist the use of the central water splice.Center fin, kayak skeg tracking fin mounting points board canoe for inflatable stand up paddle boards surfboard & paddleboard.It is usually attached to the bow section of the bottom of the ship to protect the hull from damage during the encounter with reefs or other impacts. [Multifunction] Kayak skeg tracking fin increases the stability and direction of the surfing rod. High strength, low weight, high impact resistance, high heat resistance .Used for surfing board , suitable for kinds of inflatable surfboards including shortboard, longboard, stand up paddle etc. It can be also installed to kayak to divide water and decrease the water resistance. [Easy to Install]Apply glue to the installation place, and apply glue to the bottom of the fin accordingly, after aligning to the corresponding position. Stick the fins on the installation site and heat them with a hair dryer within a certain period of time. After scraping out the with a card, arrange them and place them for 24 hours use. [Widely Application] Used for all kinds of inflatable surfboards.Center fin, kayak skeg tracking fin mounting points board canoe for inflatable stand up paddle sup boards surfboard & paddleboard.This is a tracking fin suitable for most kayaks. Weight: 100g/piece Colour: black Material: PVC Size: 21x6.5x6.4cm Package Contents: 2 * Water dividers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.