About Top Knobs With strong roots in attention to architectural detail and high quality materials, Top Knobs is one of the best names in home hardware today. With a complete line of hand-finished knobs and pulls in nearly every style imaginable, their products are enhancing the look of homes all over the country. You"ll find a wide variety of beautiful finishes and designs, every one of which comes with a lifetime guarantee. Made of zinc alloy. 3.75 inches center to center. Arch cabinet pull with a matching backplate. Available in several finishes. Dimensions: 5.03W x 1D x 1.34H in..