Introductions discussion

I’ve always liked how my girlfriend of nine years would put me in chastity for stretches, but after we split up, I spent five years free. About a year back, I connected with a woman on Craigslist who needed someone to do chores and run errands. Before long, she asked for massages, which led us further into things. She liked using her belt on my rear, and because I made it clear I didn’t want an orgasm, she felt comfortable not pushing me too hard while enjoying having me serve her as she pleased. My release happened at home, so masturbation wasn’t really discussed. Recently, she brought it up again; I admitted to doing it and mentioned needing a device. Surprisingly, she looked at the site I suggested and picked out one for me to purchase. I’ve just finished measuring myself and am ready to order. They advertise locking pins that screw in to keep things secure and claim they are pick-proof. However, I know those inexpensive little padlocks can often be opened with a knife tip or by sliding a thin piece of stock down near the latch. So I’m curious if these pins are truly as tight as advertised. Has anyone bought from Mature Metal?