The D Z Strad Model 550 viola bow is nickel/silver mounted and made of select, dense brazilwood. Featuring an octagonal stick and Ebony frog with Parisian eye inlay and abalone slide, the bow is properly balanced for an even response. The adjustment screw features a unique 8-eye design and the thumb grip is wrapped leather over silver lapping. Equipped with genuine white, unbleached, Mongolian Grade AA horsehair, the Model 400 is a great choice for all players. Handmade Viola Bow for 14"-17" Viola. The new generation of Model 400 D Z Strad bows is taking the next step to improve the playing and the sound of your instruments. They are completely handmade. The workmanship let it stand out from anything else in its price range.