The SewTites Lite Mix packs contain a combination of our Lite models for people with arthritis and other health challenges – the Libs Elliott Diamond, Lite Star, and Lite Bar. The 12-pack is a great value pack for those who know they'll use all the SewTites. SewTites Specs: Diamond - .85"" x .6"" (21.5 mm x 15.0 mm) with one lighter strength earth magnet on back | Lite Star - 1.15"" x .5"" (29 mm x 13.5 mm) with two lighter strength earth magnets on back | Lite Bar - 1.25"" x .5"" (32 x 12 mm) with two lighter strength magnets on back