Sakura’s SumoGrip® Eraser features microporous foam technology to remove graphite marks from paper surfaces for artists, students and architects. SumoGrip Erasers are composed of net-like cells that pick up graphite marks and erases better across the surface. Reticulated open-cell foam works like ultra-fine sandpaper to get into the small grooves and pits of the paper surface. Combining the existing Sakura Foam W™ Eraser with a former hybrid-matrix formula, the SumoGrip Eraser requires minimal pressure to remove graphite lead from B to 2H degrees. The new foam technology of SumoGrip erasers vastly improves the pick-up of micro-graphite particles from paper substrates that white PVC erasers leave behind. B80 Size: 20.5 × 52.5 × 10.3mm Incorporates open-cell foam technology that grabs and traps erased graphite Polymetric hard structure, yet soft to the touch Smudge-free performance Nice black color eraser never looks dirty from graphite Erasures form into strands for easy disposal Does not contain harmful phthalates Meets ACMI non-toxicity standard