the Alligator anchors expand to allow for better weight distribution

1/4 x 1 1/2 Mushroom Spike Zinc Plated (100)

1/2-20 x 6 Hex Cap Screw SS 18-8 (A2)

1/2-13 x 6 Hex Tap Bolt 18-8 (A2) Stainless Steel

1-8 x 2 1/4 Socket Cap Screw Alloy

9/16-12 x 5 1/2 Hex Cap Screw SS 316 (A4) Flat Split Drive Anchors Zinc Plated - Clearance the Alligator anchors expand to9 16 12 x 5 1 2 Hex Cap Screw SS 316 (A4) . 316 series stainless steel differs from 18 8 by its molybdenum content (2 3%) and a higher nickel content (10 14%). 316 stainless steel has greater corrosion resistance than 18 8 as well as superior strength at high temperatures.