Derma Roller Kit For Face, 540 Titanium Micro Needle, 0.25mm, Facial, Hair and Body Massage, Professional Beauty Skin Care For Home Use (White/Blue) Australian Merino 64s Top Wool Roving. Excellent for fine felting projects, spun knitwear, hand woven fabric or it's ready to dye. Soft with a nice long staple for a fine wool. 21.5 micron, bulk 3 inch staple.