1、The paddle is with 3 locking positions for different kayaking angle preference. 2、This double-headed aluminum alloy paddle features an arc streamline design, which significantly enhances the paddle\u0027s water-catching force, making each stroke more efficient. 3、The paddle is ingeniously designed with flow guide teeth. This unique feature guides the water flow when the paddle leaves the water surface, effectively preventing water from entering the hull and ensuring a smooth and dry ride. This double-headed aluminum alloy paddle features an arc streamline design for enhanced water-catching force. Its flow guide tooth design prevents water from entering the hull. The water stop ring ensures a dry cabin during rowing. The flexible assembly and disassembly from the shrink tube design at the connection point adds convenience. Features: The paddle is with 3 locking positions for different kayaking angle preference. This double-headed aluminum alloy paddle features an arc streamline design, which significantly enhances the paddle's water-catching force, making each stroke more efficient. The paddle is ingeniously designed with flow guide teeth. This unique feature guides the water flow when the paddle leaves the water surface, effectively preventing water from entering the hull and ensuring a smooth and dry ride. The paddle is also equipped with a water stop ring, which quickly guide the water away from the blades The paddle also incorporates a shrink tube design at the connection point, allowing for flexible disassembly and assembly, making it convenient for storage and transportation. Specifications: Material: Aluminum alloy, nylon Color: Black/ White/ Red/ Yellow/ Blue/ Green (optional) Length: 221cm/ 87in Weight: 910g/ 32.1oz Package List: 4 * paddles Package List: 4 * paddles