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Continue to ChatUNIVERSAL DUAL - http://www.sierralibre.com/catalogo/optica/anillas-bases-montajes/anillas-o-1/pase-weaver/universal-dual-kon-7237/
UNIVERSAL DUAL - http://www.sierralibre.com/catalogo/optica/anillas-bases-montajes/anillas-o-1/pase-weaver/universal-dual-kon-7237/