A sleek, stylish, and elegant statement piece with a discreet locking design. Crafted from smooth, polished stainless steel, this collar features a removable front O‑ring—wear it with the ring for a bold look, or remove it for a minimalist choker aesthetic. Key features Polished stainless steel collar with removable O‑ring Discreet lock: integrated hex screw secures the collar closed Low-profile hinge for a clean, continuous silhouette Requires the included hex key to open; the wearer cannot remove it unaided Hand-finished for a smooth, comfortable fit How it works The locking tab opposite the hinge includes a small hex screw. Tightening the screw into the lower groove prevents the collar from opening. To remove, turn the screw 1–2 times with the included hex key. Do not fully remove the screw to avoid loss. Fit and sizing Handmade; interior circumference may vary by approximately ±2 mm. If between sizes, we recommend choosing the larger size. Available size 120 mm internal diameter (approx. 37.6 cm / 14.8 in interior circumference) Weight: 240 grams Care and safety Close slowly and carefully to avoid pinching at the hinge. Wipe with a soft cloth after wear; stainless steel resists tarnish and is easy to maintain. Store with the hex key in a safe place. In the box Sub Rosa stainless steel locking necklace Removable O‑ring Hex key for locking/unlocking