
KVADRO - Ceramic Nail Bit, Umbrella Shape, Black XC #402
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Ceramic bits are sorted by the color of the ring on the shank. Black is the roughest grit in the code.
| Ring color | Grit |
|---|---|
| Yellow | XF, softest |
| Red | F, soft |
| Blue | M, medium |
| Green | C, rough |
| Black | XC, roughest |
This bit has the black ring, so it is the XC grit.
The Look of the Head
The head is an umbrella shape, a tapered cone with a rounded tip. It is white ceramic with large, deep diamond cuts across the whole surface. The photo labels it an umbrella-shaped polishing head.
Dimensions
| Part | Size |
|---|---|
| Head diameter | 0.65 cm (0.25 in) |
| Head height | 1.4 cm (0.55 in) |
| Total length | 5 cm (1.96 in) |
| Shank diameter | 0.235 cm (0.092 in) |
| Weight | 6 g (0.21 oz) |
Specifications
| Detail | Info |
|---|---|
| Product | Ceramic Nail Bit |
| Model | #402 |
| Brand | KVADRO |
| Shape | Umbrella |
| Grit | XC, black ring |
| Head | White ceramic |
| Packaging | Clear plastic tube with a black cap, 7 x 1.3 cm |
Questions
What does XC mean?
XC is the roughest grit in the ceramic bit color code, shown with a black ring.
What are the packaging dimensions?
The clear tube is 7 cm long and 1.3 cm wide.

KVADRO - Ceramic Nail Bit, Umbrella Shape, Black XC #402
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