Seamless Metal O-Ring 3 Pack 1.5 inches, 1.75 inches and 2 inches from Sportsheets. These O-rings can be used with any flared base dildos on an interchangeable O-Ring harness. Use with Sportsheets harnesses including Plus Strap On, Vibrating Black, Purple Velvet Strap On, Vibrating Black Strap On, Purple Corsette Strap On, Heart Strap On, Latigo Leather Strap On, Bare As You Dare Strap On, Vibrating Leather Strap On, Beginner’s Pink Strap On, Dildo Set, Simply Sexy Strap On and the Divine Diva Strap On. Works with all the Sportsheets Flared Base Dildos. Materials Nickel free metal. Includes one each 1.5 inches, 1.75 inches, 2 inches welded nickel free metal sized rings Limited Lifetime Warranty, Sportsheets will replace any defective product. If the product is not available, Sportsheets will replace it with a similar product of similar function. Video. 2021.