Product Details SPRO Twin Lock Snaps allow you to change sinkers, lures, and rigs in no time! The unique one-piece design allows for quick swaps without tying knots. SPRO Twin Lock Snaps are made of stainless steel. Finish: Black Nickel Size Test Qty. per Pack 1 50 lb. 8 3 70 lb. 8 4 130 lb. 7 5 210 lb. 6 Prop 65 Warning Customer Reviews (2) Write a Review 5 This is the best snap I have found for muskies Posted by Dennis on February 25, 2023 Easy to open and stays shut,very strong and long lasting. Easy to open and stays shut,very strong and long lasting.