• 15g Stinger. White coloured, is used in small diameter holes (45mm or less). • 150g booster. Yellow coloured, is in small holes up to 150mm in diameter. • Y-3 booster. Green coloured and conical. Is used to initiate large diameter holes exceeding 150mm in diameter. Mostly at opencast mining operations. • C 400 booster. Red coloured and conical, to initiate large diameter holes exceeding 150mm in diameter. • C 800 booster. Oranger coloured. Is used in deeper blast holes (25m and more).