Amazon.com: US Cargo Control 12 Inch Corner Protector with Slot - Black Corner Guard with Slot for Tie Down Strap - Protect and Prevent Damage to Cargo and Tie Down Strap Webbing
48in x 1.125in x 1.125in, 90 Deg, 070in Lexan Corner Guard
4 FT - 1 1/4" x 1/8" Clear Plastic Angle - Plastic Corner Guard: Amazon.com: Tools & Home Improvement