Ratcheting, quick-release jaws with push-turn design for fast 2-jaw and 3-jaw configuration. Unique offset legs grab pulley spokes. Low profile eliminates the need to remove radiator. Indexing legs hold position while working. Compatible with 3, 4 and 6 spoke pulleys, including Ford Coyote 5.0 L; GM 5.3L, 5.7LS1, 6.0LS2, 6.2LS3, and 7.0L. Used once