Check the listing for details. Singing Rock Singing Rock Timber Ii Arbor Harness Timber 3d Arbo Harness Xl. Condition: New. Listed at 274.10 USD. Work positioning harness presenting a perfect choice for arborists. Adjustable sliding D-ring enables you to take a safe, comfortable and effective work position. Wide and stiff padding offers great comfort when hanging in the harness. Four gear loops. Speed Lock buckle system.