RAB grommet grinder, 4 mm made of Tungsten Carbide, mostly for tennis and squash, very useful tool to remove bad grommets, clean or enlarge a hole, twist a single worn out badminton, squash or tennis grommet 90 degrees ( fresh unused grommet side ) for next stringing job. Made in UK. ( 3mm Grommet Grinder is no longer available )
