Milwaukee 48-22-3104 Inkzall Point Marker, Fine, Black, 4-Pack 4Pk Black Fine Point Inkzall Markers The product is durable The product is manufactured in China Clog resistant tip writes on dusty, wet and oily surfaces and is optimized for rough surfaces such as OSB, cinderblock and concrete Hard hat clip- attaches for easy access Quick dry time with reduced smearing and marking Fine point marker with black, permanent, non-toxic, ink