By reverse engineering and studying Rival Tech Shredders found tangled in returning dwarves' beards during medical examinations, R&D has found methods of rewiring their ally recognition systems and subsequently invert them. Removal of unnessecary malicious parts has resulted in a slim fold-out design that allows for packaging and easy deployment of 5 drones, bundled into a single grenade.
— Item Description
The Shredder Swarm Grenade (aka S.S.G) is an unlockable Throwable for the Engineer. When it is thrown, hitting a surface will release 5 shredders. These shredders will hover near the engineer. When spotting an enemy, they will attack in a similar fashion to the shredder enemy. They apply a slowdown status effect, decreasing the creatures movement speed by 30%. Throwing a second S.S.G will remove any active shredders the thrower may still have, maintaining a limit of 5 active shredders. If you press E while looking at a shredder, your dwarf will swat them away, knocking them back a short distance. Hitting a shredder with your pickaxe will cause them to explode, similar to the shredder enemy.