Since 1994, Thomson has produced patented bike components, specializing in seatposts, stems, and collars, and shipping over 120,000 parts a year to more than 30 countries. Masterpiece: The Premium. It combines incredibly light weight with the characteristic strength and function of a Thomson. Masterpiece seatposts weigh approximately 40 grams less than an Elite seatpost of the same size, while maintaining high strength and durability. Key Features: The Masterpiece is Thomson\'s ultimate seatpost. The weight reduction is accomplished while maintaining the strength and durability expected of a Thomson seatpost. Thomson are able to hold closer tolerances by machining than by extrusion alone. Machining all over an already beautiful design makes the Masterpiece Seatpost a work of art. The tube and head of the Thomson Masterpiece seatpost is integral-machined from one single piece of high strength 7000 series aluminium. Thomson accomplishes this weight reduction by machining the seatpost all over; including the oval inner diameter. Every component of the Masterpiece seatpost is 100 percent American made. This includes all fasteners and forgings. Each product is 100 percent inspected Saddle rails from 7 x 7mm up to 7 x 10mm work well with Thomson Masterpiece clamps. Weight limit: 200 pounds (91 Kilos). Colour: Black. Setback: Inline. Weight: 190g 31.6 x 350mm Inline (PBK office scales).