Blackline Adjustable Nipple Clamps. Adjustable by turning small thumbscrews on each clamp, this toy adjusts to ensure players of all comfort levels can enjoy them. Focus pain and pleasure when you try out this simple but erotically effective nipple clamp chain combo. Made of two strong rubber-tipped alligator style clamps, the connecting cord is lightweight enough for extended wear, and makes an excellent place to clip leads or leashes. Color: Black, Silver. Type: Nipple Clamps Material: Metal. Type: Alligator Ends. Special Features: Connecting Cord, Adjustable.