and the surface treatment is Zinc
applicable wall thickness: 0
[APPLICATION]: Suitable for use with Bridgeport mills and other milling machines
[Quality Materials]: The reducer base is made of high quality 304 stainless steel
[Advantage]: Laser-etched graduations and satin chrome finish for super precision and no glare
HFS Eccentric Flaring Tool Kit 45°Eccentric Tube Flaring Tool with Tube Cutter HVAC Refrigeration 7 Dies 10X20 FT and the surface treatment is[Package Included]: Complete Flaring Tool Set Includes 1 Flaring Cone, 1 Flaring Bar, 1 Tube Cutter, and 1 Red Blow Molded Storage Case. [Specification]: Versatile Die Sizes Designed for flaring 7 dies sizes: 3 16", 1 4", 5 16", 3 8", 1 2", 5 8", and 3 4". Cutting sizes range from 1 8" to 1 3 16" (4 30mm). [Eccentric Cone]: Precision Flaring The special eccentric cone allows for accurate and uniform flaring, resulting in smooth, scratch free flare