Chrome socket head screws: 2 pieces 1/4-20 thread x 2-3/4'' 2 pieces 1/4-20 thread x 1-1/4''Flat washers: 2 pieces - 10.9 mm OD x 6.75 mm ID x 1.5'' thicknessO-ring: 1 piece - 9.2 mm OD x 2.62 mm thicknessAluminum threaded rod, grinds finished - 1 piece