* Applying four decades of expertise, Thomson has set the bar with the Covert dropper* Custom made Norglide bearing bushings and Trelleborg O-Rings and seals* Thomson saddle clamps and fasteners* Motul Oil for durability and precision quality* Return speed is damped in the last 15mm of upward travel to be gentle on your seating area* Remote lever with 31.8mm clamp* Passes ISO 4210 fatigue and strength tests for seat posts