While the 19mm weld head is the right size for a poly-v belt tensioner on a 2011 Honda Pilot, the 12 point head works because of what is required Torque not to move the clamp. This tool is good for rounding screws and that's about it. The 6 point socket should be welded on.
DPTOOL 6PCS Camshaft Phaser Timing Chain Tools for VW Chrysler Dodge 3.6L 10200A+10202 High Performance Engine Kit
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Complete Ford 4.6L/5.4L/6.8L 3V Engines Repair Tools Set - Valve Spring Compressor, Crankshaft Positioning Tool, Cam Phaser Holding Tool, Timing Chain Locking Wedge with Crankshaft Pulley Bolt
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BETOOLL Camshaft Tensioning Alignment Chevrolet
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