and dense technical line work

vinyl and more

so the line stays sharp without manually turning the pencil

the tip is exchangeable and the ink is highly weather and smudge proof

and tight field sketching where line weight variation and moisture control matter

ekastu safety half mask polimask beta Rois and dense technical line workHalf mask made of extra soft synthetic EPDM rubber. Polimask BETA has space for two filters (not included), which you can buy here. If you want to buy a complete mask with filters, you can find it here. The mask fits very comfortably around the face and has a slightly larger exhalation valve, which, in combination with dual filters, makes it easier to both exhale and inhale. We recommend this mask for those who use it frequently or professionally as