PVC Material Kayak Paddles Clamp Adjuster is made of high quality PVC material, which is sturdy, durable, and wear resistant. Portable Paddle Clamp measures 7.8 cm / 3.07 inches in length, with one end having an inner diameter of 3 cm / 1.18 inches and the other end with an inner diameter of 2.5–2.6 cm, adjustable, small and lightweight. Easy to Install: Stand Up Paddle Boards Clamp with fastener lock allows quick and secure attachment to the paddle, convenient and practical. Fitment: Quick release paddle shaft clamp is suitable for most paddle shafts with a diameter of 2.6 cm / 1.02 inches. Great Replacement: This paddle clamp is a useful accessory for water recreation, sports, outdoor activities, and events such as canoeing, kayaking, rafting, paddle boarding, and inflatable boating. Package Includes: 1 x Paddle Shaft Clamp Note: Please allow slight variations due to manual measurement and differences in display monitors.