Quicklets from Eyelet Outlet are the quieter alternative to eyelets! The shaft is pre-split, so no hammer is required. Simply use your eyelet setting tool and press down whilst turning. The shaft will split and flatten. All of these Quicklets are 1/8 (3mm) size
I have found that I can also use a biro to split the shaft - really quick and easy and has inspired me to use eyelets again!