These Trolling Sinkers are made with Heavy Duty 75lb. rated swivels. Available in 5 sizes from 1/4 ounce to 3/4 ounce. 
 
1/4, 3/8, 1/2 come 8 to a pack.
5/8, 3/4 come 6 to a pack.
Available in larger quantities upon request.