MASTER SERIES Ass Vault Locking Ass Expander for Men, Women, & Couples. Stainless Steel Nickle Free Secure Locking Mechanism, 3 Piece Set, Silver.

Stainless Steel Plug: This plug is non-porous, nickel-free, durable, sleek and sexy; this serious, industrial style locking plug is for experienced kinksters who want premium quality toys! Expanding Petals: With a turn of the flat circle key the petals expand or close. Secure Locking Mechanism: Use the key with the gold locking pin to lock the plug in place; keep it expanded or closed to the degree you choose. Tapered Tip and Slim Neck: The tapered tip helps with insertion and the slim neck and wide base keep it safely and securely inside without concern for it going further past the sphincter. Measurements: Overall length: 3.4 inches. Insertable length: 2.8 inches. Plug expands from 1.5 inches to 2.2 inches in diameter.