Quantity   Component name
1 × 4x4x8' Main structural component. Dimensional lumber.
4 × 2x4x8' Horizontal and diagonal braces. Dimensional lumber. Typical wall stud.
4 × 1/2"x7" Bolts To fasten 2x4 on each side of (going through) 4x4.
4 × 1/2"x3" Bolts Fastens horizontal braces to diagonal braces.
4 × 3/8"x4" Lag Bolts Fastens tool mount to top of 4x4.
1 × 3/8"x2" Bolts Fastens ring roller to tool mount.
16 × 1/2" Washers Prevent bolt heads and nuts from pulling through drilled holes.
8 × 1/2" Nuts For the 1/2" bolts.