MK IV Yaw String 

wingsandwheels...
The MK IV “high tech” Yaw String has a clear turbulator base, synthetic yarn and removes easily with no adhesive residue. This is not your ordinary yaw string. Each yaw string is handcrafted through a 28 step proprietary process under a magnifying glass yielding the best quality and clarity. The base raises the synthetic yarn 0.038″ above the canopy eliminating scratches and reduces static charge.