Pat Ehlers's Bullethead Tools are available in three sizes to cover a wide range of fly patterns and hook dimensions. The Small model is ideal for hooks #14-#12, perfect for smaller terrestrials and compact poppers. The Medium tool fits hooks #10-#6, suited for standard bass bugs and hair poppers, while the Large model accommodates hooks #4-#1/0, designed for big warmwater and saltwater patterns. Each tool provides smooth compression and even shaping of foam or hair materials, helping tiers achieve consistent bullet-style heads across fly sizes with ease and precision.