What do you call the metal corners on a briefcase?

Some suitcases and briefcases have metal reinforcements at the corner, sometimes in gold, sometimes in silver. Is there a specific word in English for those or should I simply say "....with golden metal reinforcements at the corner..."?

There doesn't seem to be a specific word for this. Looking at products, I'm seeing:

• Reinforced Metal Corners
• Features a flat finish and black corner reinforcements
• Black briefcase with brass corner protectors
• Vintage Oak Wood & Leather Briefcase Brass Corner Guards Wooden Handle
• Vtg Lito Leather Brass Corner Briefcase Varese Italy OCS Combination Lock

You could use any of these and be understood.