Chris Christensen, renowned in dog shows and show dog grooming, offers a top quality pin brush. The finest quality pin brush that money can buy. Use 20mm for short coats; 27mm for medium to long coats; 35mm for long thick full coats. Ground and polished tips are the smoothest available and will not push into cushion. The supple, relaxed pin cushion is set in a light-weight solid wood body with an easy grip handle.