Zero maintenance. Period. If you didn't wash them between the start of the season and the end it wouldn't make a difference.
All the parts that aren't Ti are tungsten coated (I believe) so screws, center pins, and cutters are all impervious to the salt.
Cutters are regularly available. Usually I have them in stock, occasionally special order. Unless your cutting a LOT of wire it will be years before you need new ones. |