Core material: Stainless steel; Set of 7 brushes; Total length: 8.3 inches (210 mm); Brush size: Diameter 1.1 x 3.1 inches (28 x 80 mm); Hair material: Pig hair; 2 total length: 7.9 inches (200 mm); Brush size: Diameter 0.5 x 1.6 inches (18 x 70 mm); Hair material: Pig hair 4 mm). Hair 5 Total Length: 5.5 inches (140 mm), Brush Size: Diameter 0.8 x 0.6 inches (20 x 15 mm), Hair Material: Horse Hair 6 Total Length: 4.7 inches (120 mm), Brush Size: Diameter 0.3 x 0.8 inches (7 x 20 mm), Hair Material: Nylon