Dual Level Slicker Brushes by Jeffers Great for everyday grooming and finishing touches. Key Features of the Dual Level Slicker Brushes: They remove mats, loose and dead hair. Each features a curved head to penetrate the hair better. Non-slip finger and thumb rests for extra control. Has long and short pins that work together to effectively remove mats, loose and dead hair. Available in: Medium: 4-1/4" x 2-2/3" Large: 4-1/2" x 3-3/8"