1 cent is equal to 1/8 inch in China metal trims industry:
1 cent = 1/8 inch
The distance d in inch is equal to the distance d in cents times 1/8:
And 1 inch is equal to 25.4 millimeters:
1″ = 25.4mm
Therefore,the distance d in millimeters (mm) is equal to the distance d in cents times 1/8 times 25.4:
d(mm) = d(cent) × 1/8×25.4
Example
Convert 6 cents to millimeters:
1)Multiply 6 cents by 1/8 to get inches:
6 cents =6 × 1/8 =3/4 inch
2)Multiply 3/4 inches by 25.4 to get millimeters:
d(mm) = 3/4″ × 25.4 = 19.05mm
So,if the inner size of a dog hook is 6 cents,which means the inner size is 19 mm.
To master the above tips would be better for you to communicate with your trims suppliers.