Pro Rivet Nut/Thread Setting Tool Kits - Insert threads into sheet metal from one side (like a pop rivet) to mount mirrors, trim and accessories. Both sets include: tool, appropriate mandrels, 75 assorted rivet nuts, and instructions in a molded plastic case. Includes M3x0.5, M4x0.7, M5x0.8, and M6x1.0 rivet nuts.
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