Low Noise and ideal Sleeping: The 40 mm grommets are built in nanoscale silencing Roman ring to smoothly slide on curtain rod and protect the rod with lower noise and less friction; Protect you from noise interference and improve your sleeping environment Package Includes: you receive 1 rotary curtain punch and 50 curtain grommets; The grommets feature a silent ring in the middle and are , making them easy to slide smoothly and effortlessly; They are quiet and easy to the curtain rod The rotary punch has an inner diameter of 57.5mm and is designed to cut holes ranging from 1.9-2 inches; Hole sizes can be freely adjusted using a side screw; The punch rotates to cut holes, speeding up work and providing ease of use; The rotary punch is suitable for large projects, and the anti-slip particles on the back prevent fabric from Re-open and Re-use: they can snap together solidly, but can still be taken apart for adjustments, convert non-grommet curtains into grommets, when changing curtains, the removed curtain grommets can be reused Wide Application: Except for the replacement kit of the curtains, they are also accessories for shower curtain rings, fabric rivet, boot eyelet repair kit and DIY backpack hole bag ring etc, Manufacturer: PokFhgur