3/16" Stainless Steel Plate, 3/16" x 4" x 6", 304 SS | eBay
Ceiling Wall Mount Hook Heavy Duty Anchor Diamond Pad Eye Plate with Ring 5mm 3/16" 304 Stainless Steel Great for Yoga Swings Hammocks/Boat Rigging/Marine Deck Hardware/Suspension Training Straps : Amazon.ca: Sports &