Tweezers are available in 4 different catagories because they have almost limitless applications in the jewelry industry. You should first determine the purpose for which the tweezers will be used and order from the category which will give you the best results in its specific price range. The 4 categories are as follows:
CARBON STEEL - Have the hardest points used where rust and corrosion are not significant factors.
STAINLESS STEEL (INOX) - Rust-proof with hard points.
NON-MAGNETIC ALLOY - Non-magnetic, acid-resistant and rust-proof. Somewhat softer than carbon or stainless steel. Dumont tweezers of this type are Dumoxel.
HI-TECH - Dumont-s economy version tweezer. It is available in either INOX or non-magnetic.
100 series - Dumont Carbon Steel 400 series - Dumont Non-Magnetic Alloy 500 series - Dumont Stainless Steel INOX 700 series - Dumont Hi-Tech INOX 800 series - Dumont Hi-Tech Non-Magnetic