DescriptionThis item is a bike seatpost clamp,made ofaluminum alloy material, high-quality and durable. It will not add much weight to your folding bike and not hinder the normal function of your bike.It is easy and convenient to install and use, which is suitable for professional and personal use.Choose it for you.Features- Material: Aluminum alloy. - Size: Approx.4.20X3.60X1.00cm/1.65X1.41X0.39in. - Scope of Application: Suitable for the seat post with 30.4/30.8/30.9/31.6mm outer diameter. -Made of high-quality aluminum alloy material, durable and practical for long-lasting use. - Easy to install and operate, suitable for professional and personal use. - A good helper foradjusting the seatpost height a breeze. - It can be used to replace the broken or old one. - Lightweight and compact, it will not increase extra burden.