AMMO by MIG Anti-Slip Paste - Textures For Modelling
Color: Black for 1/72 & 1/48

From the Manufacturer:

This product has the correct colour to accurately represent the gritty surface used on the areas where the crew steps on to avoid slipping. Apply directly from the container and spread the paste with a brush. For optimal results apply two layers, the second layer perpendicularly to the first, in order to obtain a perfectly uniform texture. This product easily adapts to your needs to create different textures by tapping the surface with a brush, a sponge, by adding water, or by building up the effect in several layers. After drying for 24 hours, this texture remains securely attached to any surface.