Optional StakeTek Installation Kit, matched to your bracket pack size. Sold separately.Each kit includes, per bracket: 2 × 40 mm outdoor timber screws (Standard kit — suits 45 × 90 mm timber brackets and flat brackets) 1 × M8 × 40 mm galvanised bolt 1 × M8 galvanised nut The Plinth kit uses 2 × 20 mm outdoor screws per bracket instead, suited to the 25 × 150 mm plinth timber support. No washers in any kit.Choose the kit size that matches your bracket pack: a 20-bracket kit contains 40 screws, 20 bolts and 20 nuts.