[1.16.2] Tool Efficiency Limit?

I just wanna ask if there's a limit when making a new tool tier. I tried to set the efficiency of my tool to 18 (Gold having the highest in Vanilla at 10) but still having the same speed as gold. Can anyone explain if there is a limit in the value of Efficiency in tools?

REDSTONE(2, 190, 18.0F, 2.5F, 6, () -> {
    return Ingredient.fromItems(Items.REDSTONE_BLOCK);
})

Here is the code I used, the third value is the effeciency of the tool, and it isn't faster than gold, diamond, and netherite tools.

Edited August 15, 20205 yr by winkeyface14