Seat Post Clamp Burgtec 38.6mm - BlackSeat Post Clamp Burgtec 38. 6mm Black Effortlessly subtle and minimal design to keep your seat post secure and add the perfect last splash of colour to your build. No edge left unsmoothed, and no detail overlooked, even the split in the back has been machined wide enough so you dont need to detach your dropper cable which makes installation a breeze. A stainless steel bolt gives reliable clamping power and ensures no rust even in the grimmest