Not to toot my own horn but I love this needle minder with it?s groovy, psychedelic vibe! This particular minder was inspired by the words I scream every time I sit or stand on a rogue needle!! It used to happen way too often but not now I have one of these naughty feckers in my stitching kit. The needle minder measures approximately 3.8cms diameter and has a strong magnet so you need never lose another needle!