Razertip's standard pyrography pens are the smallest, most versatile pens made. Our fixed-tip heavy-duty pyrography pens are a bit bigger, but they will take punishment like no other. Our BPH Interchangeable-tip heavy duty pen allows you to buy those "lesser-used" tips, or to make your own custom tips. All Razertip pyrography pens carry a full one year unconditional warranty (including fixed tips). Adapter cords are available to fit Razertip pens for use on other pyrography wood burners.