Prepared Fly Tyers Wax, still produced to the same wax recipe Veniard have been producing for decades.

Just wipe the Veniard Prepared Fly Tyers Wax against your thread for it to work, or if you want to soften a little a great tip is to break a very small piece then immerse in warm water which will soften it, stick it to your index finger and draw your thread through it as required. A simply brilliant fly tying wax and a consistently huge seller used by almost everyone who ties their own flies.