You'll find first pickguard SSH without cover (SKU start by 1-) then the SSH with cover (SKU start by 2-)
At the end, the Fender Strat Strat with 2 holes ont the left. Note there are 3 holes. You can use the pickguard as a standard one (H without cover) Note BOSTON pickguard have a '62 cut. Not Fender US standard.