Description: The 2MM inner hex positioning screws can strengthen the seat tube. Simple and detachable assembly design makes it wear-resistant and compressive. The seat tube clamp is thickened and widened, which can prolong the service life. With lengthened arm design, it is lightweight and labor saving. With frame port design, it can prevent the seat tube from sliding off. Made of aluminum alloy material, it is durable. The length of the product is 7.35cm, the width is 4.6cm, and the thickness is 2.6cm. There are two models to choose from. The seatpost diameter of A style is 39.8mm,and the B style is 40.8mm. It is suitable for folding bikes, mountain bikes, etc. Item Name: Seatpost Clamp Material:Aluminum Alloy Size:7.35cmx4.6cmx2.6cm/2.89inx1.81inx1.02in Notes: Due to the light and screen setting difference, the product's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Seatpost Clamp