Set of 4 Feather Former's 
Extra-Coarse tip set (~40 lines/inch). Suitable for very large birds or very coarse detail.
Includes: TH52.12XC Round; TH55.10XC Spear; TH56.10XC Chisel; TH57.10XC Round-ended skew.

Will only work with the Binding-Post Interchangeable-tip Pen #BPH.

Imagine texturing a bird carving in minutes instead of hours! Razertip's new Feather Former's™ let you define a feather and burn the barb texture in seconds.

Not only are feather formers faster to burn with, but painting a "Feather-Formed" surface is easier because the texture is not too deep. You can easily paint accent marks at angles to the main texture, creating a very soft, natural look. Once your bird has been textured with Feather Formers™ you can come back with your regular pens to create stray barbs or splits as desired, or you can continue on with stoning techniques.
The possibilities are endless.