Pecan chunks are an Aussie native with very similar characteristic to hickory.
Chunks are approximately fist-sized pieces of woods that provide a long-lasting smoke for your cook. They typically burn for much longer than chips; you can expect several hours of smoke in a traditional smoker and at least an hour in a grill or pit.
Please note, that due to their size, wood chunks are not suitable for use in the Masterbuilt Electric Smoker.