The polishing assistant is made from specially cut steel and can make your tools sharp again!
This sharpener blocks are getting used with sandpapers，8000 or 10000 will be best for it. (Ultra fine)
Type A front R groove grinding 1-6mm edging device, groove surface can be polished flat punch, dig, push grooveType B: the front R groove can polish the front of 1-5mm edgeware, while the back square groove can grind the back of edgewareThe right side of type B can polish 6mm wide shovel
Dimensions in mm : 11 x 45 x 50weight：A.108g b.114g