For a super fast position serious low weight and multi adjustable aerobar the t3 carbon fits the bill nicely ergonomic extensions are sculpted to fit both hand and wrist comfortably suitable for both triathlon or time trial use made from multi directional carbon fibre these extensions are light perfectly shaped and soak up that unwanted road buzz multi fit system accepts 260 mm and 318 mm oversize handlebars j4 armrest brackets are strong and light weight with more width adjustm