Our fuel has different types of 2H,3H,4H,6H etc,2H and  3H  are suited  to relatively lower  hot  pots,and 4H and 6H are suited to relatively  higher hot pots  in  the market are generally  matched.
2H  Specification: Height :3 cm
Diameter:6.1 cm
3H  Specification: Height :3 .2  cm
Diameter:8 cm
 4H  Specification: Height :4 .5  cm
Diameter:8 cm
 6H  Specification: Height :5 .4 cm
Diameter:8 cm