Wishlist Quick view LH DOTTIE Dottie HS20 High Speed Steel Jobber Length Drill Bit; 5/16 x 4 1/2 In $24.70 High speed drills are rolled forged and have a 135-degree split point. They are suitable for steel, steel forging, cast iron and other work materials. Also known as -Dottie HS20 High Speed Steel... Add to Cart Add to Wishlist