The Kayak Paddle Shaft is crafted of durable, lightweight aluminum. Its simple design makes it quick to clip on and off as needed, allowing you to easily transition between exercises. Includes: (1) Kayak Paddle Shaft, assembly instructions. Compatible with: All Ergometer models. Note: For more realistic kayak paddling, consider the full Kayak Adapter Kit, which includes (1) Kayak Paddle Shaft, (1) Kayak Foot Brace, and (1) Kayak Power Meter Mount.