KVADRO - Ceramic Nail Bit - Corn, Blue - M #408

Blue M sits in the middle of the KVADRO ceramic bit grit scale: softer than the green C and black XC bits, firmer than the red F and yellow XF ones. Bit #408 has the corn shape, a white ceramic head with a diagonal crosshatch of cuts, set on a steel neck with a blue ring. The photo labels it a corn shaped polishing head. What the Photo Shows A rounded, slightly tapered head, 0.6 cm wide and 1.3 cm tall A blue ring on the neck, repeated on the tube cap A steel shank, 0.235 cm in diameter A clear plastic tube, 7 x 1.3 cm, for storage Specifications Product: Ceramic Nail Bit Brand: KVADRO Model: #408 Shape: Corn Grit: M, blue ring Head diameter: 0.6 cm (0.23 in) Head height: 1.3 cm (0.51 in) Total length: 5 cm (1.96 in) Shank diameter: 0.235 cm (0.092 in) Weight: 7 g (0.24 oz) Packaging: clear tube with a blue cap, 7 x 1.3 cm (2.75 x 0.51 in) Questions What does the blue ring mean? Blue marks grit M, the medium grit in the KVADRO ceramic bit color code. Does the tube cap match the bit? Yes. The cap is blue like the ring, so the grit is easy to identify without taking the bit out.