Pack Short Professional Synthetic Brushes 4UD Size 4,7,7,8 Very soft synthetic hair professional brushes. Perfect for acrylic or genesis paints. Black varnished wooden body. Length: 19cm. Blister of 4 units: 2 with round ferrules of No. 4 and 8; 1 with a flat ferrule of No. 7 and 1 in the shape of a fan with No. 7.