PH4 Screwdriver fit for fitting the automatic fender system.
We strongly recommend the use of a PH4 sized bit for the fitting of the Automatic Fenders to your boats rails. This is an extra hard bit, in case you don’t have one. Note that most ordinary screwdriver sets only go up to PH3, which we do not recommend.
This, and a screwdriver handle, are the only tools you need to fit the Automatic Fender System.