Can these cut through stainless steel or just aluminum?

These are designed for sheet metal and trim work. Stainless is much harder — stick to aluminum, mild steel, and similar materials to keep the blades sharp and the snips performing well.

Do I need to oil or maintain these after use?

Wipe them down after use to remove metal dust and debris. A light machine oil on the pivot point keeps them smooth. No special maintenance needed — they're built to hold up.

Are these left-hand or right-hand only?

These are standard right-hand snips. Left-handed users should contact support to confirm if a left-hand version is available.