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Made of aluminium alloy, hollow design, retains strength, lightweight and solid. The quick release design of the seatpost clamp speeds up installation and removal. The seatpost clamp should match the diameter of the seat tube on your frame and not the diameter of the seat post itself. If you have any problems, please do not hesitate to contact us. Wir sind immer für Sie da und antworten Ihnen innerhalb von 24 Stunden. Suitable for road bike, MTB, folding bike, track bike, etc. › See more product details; Product description 3 pieces bicycle seat post lamps 40 mm aluminium alloy lightweight bike quick release seat post clip bicycle accessories Feature: 1. Made of high quality aluminium alloy material, more robust, durable and long service life. 2. Simple and lightweight, easy to install and remove, convenient to use and use. 3. Anodic oxidation treatment, exquisite technology, good hand feeling. 4. Professional manufacturing, can be fixed firmly, difficult to fall. 5. Quick release seat post, wonderful accessory for bicycles and bicycles. Specification: Item type: quick release seat post clamp. Material: aluminium alloy. Colour: black. Quantity: 3 pieces. Weight: approx. 56 g. Size: approx. 40 mm / 1.57 inches. Package list: 3 x Bike seat post; Product description 3 pieces bicycle seat post lamps 40 mm aluminium alloy lightweight bike quick release seat post clip bicycle accessories Feature: 1. Made of high quality aluminium alloy material, more robust, durable and long service life. 2. Simple and lightweight, easy to install and remove, convenient to use and use. 3. Anodic oxidation treatment, exquisite technology, good hand feeling. 4. Professional manufacturing, can be fixed firmly, difficult to fall. 5. Quick release seat post, wonderful accessory for bicycles and bicycles. Specification: Item type: quick release seat post clamp. Material: aluminium alloy. Colour: black. Quantity: 3 pieces. Weight: approx. 56 g. Size: approx. 40 mm / 1.57 inches. Package list: 3 x Bike seat post; 3 pieces bicycle seat post lamps 40 mm aluminium alloy lightweight bike quick release seat post clip bicycle accessories Feature: 1. Made of high quality aluminium alloy material, more robust, durable and long service life. 2. Simple and lightweight, easy to install and remove, convenient to use and use. 3. Anodic oxidation treatment, exquisite technology, good hand feeling. 4. Professional manufacturing, can be fixed firmly, difficult to fall. 5. Quick release seat post, wonderful accessory for bicycles and bicycles. Specification: Item type: quick release seat post clamp. Material: aluminium alloy. Colour: black. Quantity: 3 pieces. Weight: approx. 56 g. Size: approx. 40 mm / 1.57 inches. Package list: 3 x Bike seat post