* In accordance with DIN_ISO 1042 Standards.
* Manufactured from Heat Resistant, Low Expansion 3.3 Borosilicate Glass.
* Available in blue colour printing.
Centre : 29/32
Parallel : 14/23
Side 5 degree : 14/23
Side 10 degree : 14/23
Side 15 degree : 29/32
Pack of (Pcs) : 1