Carding and combing are pre-spinning treatments to align the fibers which enables you to spin fibers more easily. For the technique of felting or making woolen blankets, carding is essential. Combing straightens the fibers more than carding. This difference determines the character of the spun thread: worsted or woolen-spun. Lou?t handcards are made of tulip wood, a Dutch Poplar variety. These light weighted handcards have a curved back and ergonomic handles that fit comfortably in your hands. The 19 x 10 cm (7 1/2" x 4") handcards are available in fine (46 teeth per square inch) and extra fine cloth (cotton carders, 110 teeth per square inch); the 10 x 10 cm (4" x 4") handcards are only available in extra fine cloth. In order to ensure a long life, the teeth on all Lou?t carders are made of high grade plated steel wire. As this is a quality handcrafted item being shipped from The Netherlands, please allow 6-8 weeks for delivery.