Mini fiber optic light attenuation tester with optical wattmeter and all-in-one red light wavelength memory

Features:1.24 diamond grinding wheels, 22 mm in diameter, and 4 mandrels, 3 mm in diameter.
2.Compatible with Dremel, Wen, and most rotary and pneumatic tools.
3.Can transform your rotary tool into a high-speed cut-off saw and grinder.
4.Sharp and robust, suitable for cutting gemstones, porcelain, tiles, carbide, rocks, aluminum, and copper.
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