VEVOR Cable Railing Post Level Deck Stair Post 42 x 1.97 x 1.97" Cable Handrail Post Stainless Steel Wire Drawing Deck Railing DIY Picket Without Hole Stair Railing Kit With Mount Bracket Sliver

Yes, drilling is required for installation. The product description states, "Free Drilled Hole: The number of holes and the distance between hole to hole can be adjustable to give you diversity in the jobs it can complete. With the help of measurement instruments is better. When drilling, leveled holes and inclined holes are both available."

The product description states that it is suitable for outdoor use. The stainless steel construction with a brushed finish helps resist corrosion and rust.

Yes, the cable railing post can be mounted on angled stairs. Its 0-300 degree rotating cast bracket allows it to shift to different angles for installation on stairs.

It is made of 304sus stainless steel.

You’d have To cut off the top and cap the cut with something else that made it look factory

The only way it could be shortened is if you cut it off and re-weld it