OVERVIEW: 100kg General-Purpose Bombs (GPBs) are unguided gravity bombs designed for versatile use against a wide range of targets. These bombs are widely deployed due to their simplicity, adaptability, and cost-effectiveness.

DETAILS: These bombs typically consist of a steel casing filled with high explosives (e.g., TNT, Composition B, or RDX-based fillers) and equipped with nose or tail fuzes for impact or delayed detonation. With an approximate explosive filling of 40–50 kg, they are effective against light fortifications, vehicles, infrastructure, and personnel. They may be retrofitted with tail kits or guidance kits (e.g., laser, GPS/INS) to convert them into precision-guided munitions. Deployment is generally from fighter aircraft, light attack planes, or helicopters.

ROLE SUMMARY:
Category: General-Purpose Bomb
Primary Use: Multi-role strike against soft and semi-hardened targets
Function: High-explosive blast-fragmentation
Platform: Aircraft, helicopters
Integration: Can be adapted for guided munition kits

SOURCE:
Jane’s Air-Launched Weapons
https://en.wikipedia.org/wiki/General-purpose_bomb