The Amerock Blackrock Knob. Inspired by hard, geometric lines, the Blackrock collection's simple shapes make a lasting impression. Founded in 1928, Amerocks award-winning home solutions including decorative and functional cabinet hardware, bath accessories, decorative hooks and wall plates have built the companys reputation for chic design accessories that inspire homeowners to express their personal style. Amerock offers a variety of styles and finishes at affordable prices that add the perfect finishing touch to any room.