1kg wires of 1.0mm for mig fluxcore gasless aka self shielded wires for welding stainless steel grade 304 and 308.
when welding SS its advisable to use same grade wire or wire of higher grade, example welding SS 304 use grade 304 wire 308 or 316,. but don't use grade 304 to weld grade 316 SS. though possible but not recommended.
other mig wires are available as well.
mild steel fluxcore 1kg and 5kgs
gas mig wires 1kg and 5kgs
tig Tungsten rods for SS, aluminium and mild steel
weld consumables.
etc