Each size has 5 pieces, total 4 sizes, total 20 pieces with 4 drills.

Glass fiber as a special plait in a multi-axial arrangement giving better resistance to bending and torsion forces. 
The glass fiber will prevent the post from breaking and makes it very sesillent and it willnot like a hard and numb metal post transmit stress and shck to the dentine. 
It will work together with the dentine to absorb any stress or shock as it has about the same elasticity as the dentine itself Glass fiber post is radio=opaque, allowing fast recognition on the X-ray. 
Proprietary Device Name NORDIN GLASSIX GLASS FIBRE COMPOSITE POST,
NORDIN CARBONITE CARBON FIBRE COMPOSITE
Medical Specialty Code DE - Dental
Classification Name POST, ROOT CANAL
Common Generic Name ROOT CANAL POST
The lastest generation of highly radiopaque & light transmitting fibre post.
Anatomically shaped to fit the root canal (cylindroid-conical)
With a color coding for easy identification and mechanical retentions
4 Size for you choose,Assorted or single size:
Diameter:
Size 1: Ø 1.00
Size 2: Ø 1.20
Size 3: Ø 1.40
Size 4: Ø 1.60