Extension hose question

Stupid question… my pressure washer came with a 25’ 1/4” hose, I needed a longer one so I have a 50’ 5/16” hose. Could I connect them both together to make a 75’ hose or can you only connect hoses of the same diameter? Otherwise obviously I’d just use the 50 ft one by itself. Thanks for your time.

You need to have quick connects on that hose and high pressure fittings rated higher than your psi. Id also stick with the same diameter, Whats your psi ?
EBAY has what you seek.

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It won’t hurt anything.

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My psi is 3400. I have extra m/f quick connects, I actually just added one to the end of my gun to make it easier then screwing it. Thanks, I’ll just use the 50’ by itself to be safe.

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