Tapcon 3/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 50 Snap Hook w/ Screw Nut & Eye then cover them with plywood

then cover them with plywood or another flat surface to create your second level

It also has a tamper-resistant design that accepts a long shank padlock (not included) to prevent theft

Twisted polypropylene rope is also easy to splice and less prone to unwinding

#8 304 Stainless Steel T20 Bugle Head Deck Screw

5 TPI Coarse Thread: Ensures tight grip in thick lumber

Tapcon 3/8" x 3" LDT Large Diameter Concrete Screw - Hex Head - Zinc | Qty. 50 Snap Hook w/ Screw Nut & Eye then cover them with plywood3 8" x 3" LDT Tapcon Screw, Zinc, Pkg 50 The 3 8 inch x 3 inch LDT Tapcon Zinc Concrete Screw Anchor is engineered for strong, secure anchoring into concrete, brick, and block. Its longer length increases embedment depth for enhanced pull out resistance. Each 50 pack is suited for demanding structural and mechanical fastening tasks. 3 8" x 3" Zinc Plated Heavy Duty Concrete Screw Anchor Featuring a zinc plated finish for corrosion resistance in