SWK CARBON MAST Y27The new SWK Carbon 1. 5 13 85 is dedicated to those who love to have more control at high speeds. We have reduced the thickness of the mast by 3 mms compared to our SWK CARBON MAST 1. 8 13 85 to gain more speed and control when flying using smaller front wings. The plate has been completely re designed to increase strength to be able to withstand high jumps and last over long time use. This carbon technology has a minimum of flex and torsion to feel