Arrived incorrectly fitted. The ratchet was rotated 180 degrees so the cutting teeth rotated back and did nothing. I had to disassemble and fix it to get the teeth rotating in the correct direction (clockwise). Now it works fine. The quality of Ridgid isn't what it used to be. I recently had two matrices that didn't work or broke after a few uses. I first started using Ridgid products in 1978.
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