Inch Series Flange enables force to be spread over a larger area resulting in lower surface pressure Oversized holes and/or tooling can be covered by the flange ‘As produced’ oiled finish (black) – Provides some shelf life but no real corrosion protection in useKit contains:Size 3/4″ (6, 8 and 10mm) Size 1/2″ (6, 8 and 10mm) Size 5/8″ x 6mm