Factory German made H&K 9mm MP5 magazine clamps. Allows you to clamp two MP5 9mm 30-round magazines together. Fits all German, MKE, POF, KCI & USA steel magazines Works with all 40, 30, 20 ,15 & 10 round steel curved magazines. Sale is for one clamp. Used with scratches, dings, and general wear. Sold as is, all sales are final, no returns.