Block Modification block.modification event is a startup script event that allows you to change properties of existing blocks onEvent('block.modification', event => { event.modify('minecraft:stone', block => { block.destroySpeed = 0.1 block.hasCollision = false }) }) All available properties: String material boolean hasCollision float destroySpeed float explosionResistance boolean randomlyTicking String soundType float friction float speedFactor float jumpFactor int lightEmission boolean requiredTool