Scotch Tension High Speed Spinning SetTake on high speed spinning for fine yarns! The beech high spinning set is suitable for the S10C Scotch Tension wheel, S11 Julia, and S95 Victoria spinning wheels. The oak set (not pictured) matches the oak S96 Victoria. The flyer has an orifice of 5 mm. For the S10C and the S11, the pulley adds an extra spin ratio of 1: 27. For the Victoria that additional ratio is 1: 20, due to the smaller diameter of the fly wheel.