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# Factorio Runtime Docs Version 2.0.77

# ModifierType - Runtime Docs

## ModifierType :: union

Used by TechnologyModifier.

#### Union members

`"inserter-stack-size-bonus"` |
`"bulk-inserter-capacity-bonus"` |
`"laboratory-speed"` |
`"character-logistic-trash-slots"` |
`"maximum-following-robots-count"` |
`"worker-robot-speed"` |
`"worker-robot-storage"` |
`"turret-attack"` |
`"ammo-damage"` |
`"give-item"` |
`"gun-speed"` |
`"unlock-recipe"` |
`"character-crafting-speed"` |
`"character-mining-speed"` |
`"character-running-speed"` |
`"character-build-distance"` |
`"character-item-drop-distance"` |
`"character-reach-distance"` |
`"character-resource-reach-distance"` |
`"character-item-pickup-distance"` |
`"character-loot-pickup-distance"` |
`"character-inventory-slots-bonus"` |
`"deconstruction-time-to-live"` |
`"max-failed-attempts-per-tick-per-construction-queue"` |
`"max-successful-attempts-per-tick-per-construction-queue"` |
`"character-health-bonus"` |
`"mining-drill-productivity-bonus"` |
`"train-braking-force-bonus"` |
`"worker-robot-battery"` |
`"laboratory-productivity"` |
`"follower-robot-lifetime"` |
`"artillery-range"` |
`"nothing"` |
`"character-logistic-requests"` |
`"unlock-space-location"` |
`"unlock-quality"` |
`"unlock-space-platforms"` |
`"unlock-circuit-network"` |
`"cargo-landing-pad-count"` |
`"change-recipe-productivity"` |
`"cliff-deconstruction-enabled"` |
`"mining-with-fluid"` |
`"rail-support-on-deep-oil-ocean"` |
`"rail-planner-allow-elevated-rails"` |
`"beacon-distribution"` |
`"create-ghost-on-entity-death"` |
`"belt-stack-size-bonus"` |
`"vehicle-logistics"` |

Concept used in

- TechnologyModifier