The stinger 7 is great for the middle or neck position of your h-s-s, 7 string instrument where reverse polarity for noise cancellation may or may not be needed. the alnico magnets offer a vintage tone but wound slightly hotter for increased output. the recipe is encased in a closed epoxy resin casting to eliminate internal bobbins and make room for more coil. – PLEASE NOTE: Price and availability subject to change. No returns on Clearance items.