Sabian 11502XEB/1 HHX Evolution Hi Hat Top Brilliant Finish - 15"Built on the same design template as the original 14 model, 15 HHX Evolution Hats offer glassy, shimmering response and project even the busiest sticking with crisp clarity. In response to the growing demand for larger Hats, Dave Weckl asked the SABIAN design team to add a larger set to the Evolution offering. The new hats are slightly lower pitched and deliver washy, more open attack while still maintaining the tight, crisp foot that makes Evolution