Thomson Masterpiece Seatpost. Features: Reduced weight version of the Elite post, saves up to 30 grams Post and cradle machined from 1-piece 7000 series aluminum 41mm rail clamping area, micro adjust and dual pivoting bolt head Zero clamp offset, 193g (27.2x330mm) Specs: Diameter:27.2mm Length:330mm Setback:zero Color:black Remarks:Includes mineral oil 50cc, syringe, tube for lever, tube for caliper, (2) compression nuts, (2) olives, (2) barbed fittings