The 10″ London Brick Trowel is best for working with brick verses stone or concrete. Brick trowels are generally between 10 to 13 inches long and 5-6 inches wide. There are differences between the London and Philadelphia Trowel. The London Trowel has rounded heels verses the more squared heels of the Philadelphia Trowel. A Philadelphia Trowel will hold more mortar than a London Trowel, making it more ideal for stone or block work. The design and pattern of the London Trowel forces the mortar towards the front of the trowel which is perfect for brick work. Overall, it’s a matter of preference in choosing the trowel that is most comfortable for you. Wash and dry the trowel after each use.