The dual screw clamp design enhances the stability and safety of your ride. By increasing the clamping force, it offers better security, ensuring your seat post stays firmly in place even on rough terrains. This feature is particularly beneficial for mountain bikers and those who enjoy off- . Features -Color:Black -Material:Aluminium -Size:5.00X4.20X2.50cm/1.97X1.65X0.98in -Firm hold: the dualbolt system provides a on the seat post, preventing any unwanted movement or loosening during use. -Universal fit: compatible with 39 mm seat posts, this clamp can be used with a variety of bike models, making it a versatile choice. -Enhanced security: the dualscrew clamp design offers increased clamping force, ensuring the seat post stays firmly in place for added safety. -Stylish finish: the sandblasted black finish gives your bike a sleek and stylish look, complementing its overall design. -Robust build: made from durable aluminum, this seat clamp is built to withstand regular use, offering durability Package list: 2 x bicycle seat tube clamp