These are Revolver Supply Premium moon clips. They are designed to work in the S&W 5 shot J Frame Model 940 and 442 revolvers chambered in 9 MM.
These moon clips are 0.036" thick, made from Stainless Steel. These also fit the Ruger SP101
They are however too thick for the Taurus 905. Try here Taurus 905
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Does not work in new ruger 9mm. Too thick. Cylinder won't close. GM- Yes RUger made a change in the newer guns
These Moon Clips are much better than the original s&w moon clips. They fit over the 9MM arbor easily. The s&w clips center hole is way too small and will not fit over the arbor at all. Excellent clips, and are much sturdier.
Bought the 10 pack for my Ruger SP101. These clips do not and will not fit a 38 special round. I am in the process of getting a refund. GM- of course they are for 9MM