Whitlow Guaranteed Jaw Harps are individually handcrafted one by one. With a stainless steel frame and spring steel tongue, they have a clear, loud voice and quick, responsive snap. Each and every one is meticulously and precisely hand tuned to A440Hz concert pitch, and available in a variety of keys. Nearly unheard of with any other jaw harp, these carry a free of charge, full lifetime warranty (by the maker) against breaks during normal use!