Schaller BM Light Single Left Nickel .Schaller BM Light.Version: left .Wing: M4 Light.Axle: Solid. Headstock 19,8mm.Translation 1:22.Incl. 4 banjo bolts, 4 washers.Colour: Nickel.No more top-heavy! The use of carbon and aluminum results in significant weight reduction. Neither durability nor precision are thereby reduced.The BM Light weighs about 50% less than comparable mechanics. With pins.