Detector Tube, Carbon Monoxide, SST, Measuring Range 0.3 to 7.0 Percent vol., For Use With Accuro, Material Glass, Tip Break Off, Pressure Range 1013 hpa, Package Quantity 10 RestrictionsHazardous MaterialCalifornia Proposition 65 Warning: This product contains a chemical known to the State of California to cause cancer. Dr gerTubes Detection Tubes and accuro Tube PumpsTubes have a wide diameter and well-spaced graduations that are easy to read and help provide decisive measurement results. All pump kits include pump, tube opener, spare parts kit, and Allen wrench. 3YWY6 also includes a pkg. of 10 rubber caps and a molded plastic carrying case. 3WZF2 also includes a nylon transport case.