New from Tsumura .325 .043[1.1mm] universal mount bars. These will fit to all small chainsaws as long as you are running a .325 nano sprocket [OR a .325 drive rim]. If running a Husky you may need a gasket – find them here.
Will it cut as thin as 1/4 .043? No… close but not as thin a kerf.
Will it be a stronger set up than 1/4 .043? Yes – slightly thicker bar and sturdier chain.
Will it last longer and be easier to sharpen than 1/4 .043? Prob yes on both counts.