Sakura’s SumoGrip® Erasers work like ultra-fine sandpaper, getting into the small grooves of paper, and grabbing and trapping erased graphite. The slick black color never looks dirty, and erasures form into strands for easy disposal. SumoGrip Erasers offer smudge-free performance and 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. 
 
This is a unique retractable, refillable stick holder with the black eraser.
 
Watch the video here.