These fake gauge "Baby Witchetty" earrings are our latest designs at No Holes Barred, and we call the locking mechanism "Push Backs". Push Backs are similar to butterfly backs; to secure the earring in your ear, the thin post at the back of the earring is inserted into a tiny,self-locking hole in the front of the earring. The earrings are removed by simply pulling the post out of the hole it doesn't get any easier! Again, with no pin or ball fitting connection, these look like 100% authentic stretched ear pieces that will fool everyone! They measure 8-9mm at the widest point next to steel pin, just over 1" in diameter & the 316L surgical steel pin is a 'wearable by all' 1mm. We've worked very hard on this locking mechanism and are very proud of the results, so we hope you are too. As with all my jewelry, these beautiful earrings are meticulously hand carved from the highest quality Indonesian Sono Wood. They are intricately inlaid with bone as well as being tipped in bone as well, to create a truly stunning look. The pin system is made from surgical grade hypo-allergenic 316L stainless steel so no problems for those of you with sensitive skin. These new items are truly some of my best carvings. They are also ultra-lightweight, so you can achieve that gauged ear look, but your ear won't suffer as a result!, I polish each piece with 8 different grades of sandpaper, to create a really gorgeous sheen. The extra effort really pays off with these woods as the richness of the natural hues really comes out fantastically. Please bear in mind that these are all natural products and as such can vary slightly from the above photograph. But rest assured, I only source my materials from the most highly regarded suppliers, so if anything, the piece you receive could look even better!