Size of Briquette : Square : 25 mm x 25 mm x 15 mm Cube : 25 mm x 25 mm x 25 mm Stick/Finger Stick : 17 mm / 20 mm, Long Based On Requirement Hexagonal : Maximum Diameter 40 mm, Middle Holes 100 mm, Long 50 mm Cylinder : Maximum Diameter 40 mm, Middle Holes 100 mm, Long 50 mm Rectangle : 40 mm x 30 mm x 25 mm Mercy : 25 mm x 20 mm x 15 mm