Drew from Engin is one of the most thoughtful framebuilders. Everything he machines in-house is done so the highest degree of precision, while still nodding to the aesthetics demanded from today’s clientele. These seat collars are designed to offer the most evenly distributed clamping force over the largest possible area, reducing the stress on frames and sea posts. You no longer have to over-torque your clamps to keep your post from slipping. Doing so can crack your frame, or your post, and prevent dropper posts from working properly. These clamps are made from 6061 aluminum, are plated in three finishes, feature formed threads to prevent stripping, include 6-2-4-2 titanium fasteners, weigh only 29g and are available in 34.9 clamp diameter only. See more at Engin.