Marshalltown 34P Wide London Pattern Brick Trowel Plastic Handle 12in34 Series Wide London pattern brick trowels with plastic handles are forged from a single piece of high carbon steel, then heat treated for strength and durability. Blade is taper ground and polished to give the correct flexibility and feel. Wide London pattern trowels have a rounded heel which places mortar further forward on the blade than the Philadelphia style trowels. Plastic handle. Size. 300 x 145mm (12 x 5 3 4 in).