Fabricadas en metal acabado pulido completo, incluye 14 piezas en las medidas de 3/8"(9.3mm), 7/16"(11.1mm), 1/2"(12.7mm), 9/16"(14.3mm), 5/8"(15.9mm), 11/16"(17.5mm), 3/4"(19mm), 13/16"(20.6mm), 7/8"(22.2mm), 15/16"(23.8mm), 1"(25.4mm), 1-1/16"(27mm), 1-1/8"(28.6mm), 1-1/4"(31.8mm).