4 in. Universal Reversible Chain WrenchThis wrench can be tightened or loosened without having to change its position, which makes it ideal for working in hard to reach spaces such as pipes very close to a wall or inside a register, spaces with corners or with other elements around them. Special tooth design lets you alternate tightening and loosening without having to change the position of the wrench High capacity and comfortable weight Designed specifically for easy operation in sharp