The Milwaukee Inkzall™ Jobsite Fine Point multi colour Marker 4pk set features clog resistant tips and can write through dusty, wet or oily surfaces, ensuring it is fit for all types of jobs, whatever the weather. It is designed to be durable, and perfect for writing on rough surfaces such as OSB, cinder block and concrete. The ink dries quickly to reduce smearing and errors and damage to workpieces, this pen has been designed with such clever technology it also doesn’t dry out quickly when the lid is left off. The INKZALL® markers have a built-in hard hat clip for easy storage and access, no more searching for a pen. This is a 4pk, ideal for trade professionals as well as DIYers. Clog resistant marker tip Writes through dusty, wet and oily surfaces Durable marker tip for writing on concrete, OSB and rough surfaces Built-in hard hat storage clip 1mm