Petite Aspirating Syringe C-W Type Cook-Waite Type Petite Aspirating Syringe. Reduced thumb ring handle diameter to eliminate the excess gap, allowing just enough room for comfort and ease. New oval shaped ring handle that fits naturally to the shape of your thumb. Rounded edges on ring handle to create a smooth and soft feel. Slightly flared base on ring handle to ease pressure while dispensing. Shortened harpoon rod to reduce strain during aspiration. Wide wings allow for a better grip with greater control.