Version: V3

# IUniswapV3PoolImmutables

These parameters are fixed for a pool forever, i.e., the methods will always return the same values

## Functions​

### factory​

  function factory(  ) external view returns (address)

The contract that deployed the pool, which must adhere to the IUniswapV3Factory interface

TypeDescription

### token0​

  function token0(  ) external view returns (address)

The first of the two tokens of the pool, sorted by address

TypeDescription

### token1​

  function token1(  ) external view returns (address)

The second of the two tokens of the pool, sorted by address

TypeDescription

### fee​

  function fee(  ) external view returns (uint24)

The pool's fee in hundredths of a bip, i.e. 1e-6

TypeDescription
uint24fee

### tickSpacing​

  function tickSpacing(  ) external view returns (int24)

The pool tick spacing

Ticks can only be used at multiples of this value, minimum of 1 and always positive e.g.: a tickSpacing of 3 means ticks can be initialized every 3rd tick, i.e., ..., -6, -3, 0, 3, 6, ... This value is an int24 to avoid casting even though it is always positive.

#### Return Values:​

TypeDescription
int24tick spacing

### maxLiquidityPerTick​

  function maxLiquidityPerTick(  ) external view returns (uint128)

The maximum amount of position liquidity that can use any tick in the range

This parameter is enforced per tick to prevent liquidity from overflowing a uint128 at any point, and also prevents out-of-range liquidity from being used to prevent adding in-range liquidity to a pool

#### Return Values:​

TypeDescription
uint128max amount of liquidity per tick