The FX902 kit contains 3 x 75ml tube of low modulus silicone, 75 x self-drilling screws, 75 x colour caps (silver) and 1 x fixing instruction leaflet.
On the back page of the instruction, leaflet is a table that indicates which kit is required for each size of flashing.
Self-tapping screws should be installed 25 - 50mm apart, in the center of the surrounding metal base.
The socket size is 11/32 inch.