These can be manufactured as per your project requirement. 1 pilot and countersunk hole is provided per panel batten which includes one 3mm x 30mm screw for connection.
It is advised that when connecting this to the back of the batten trellis that the existing countersunk pilot holes be used as a guide to pilot into the back of the battens.
All components to complete this as a DIY kit are available individually within Accessories.