mc_rebalance_datapack/data/tetra/modules/double/basic_handle.json

{
    "variants": [
        {
            "materials": [ "tetra:wood/", "tetra:metal/", "tetra:bone/", "tetra:rod/" ],
            "key": "basic_handle/",
            "extract": {
                "availableTextures": [ "default", "metal", "bone", "bright", "tconstruct" ],
                "models": [ { "location": "tetra:item/module/double/handle/basic/" } ]
            }
        }
    ]
}