Specification: Weight-25g, Outside Diameter-35mm (Ring), 20mm (Magnetic Socket). A stainless-made carabiner-style ring with a refined magnetic socket! Compatible with models featuring a magnetic tail (such as Obulb, Obulb MC, S1R II, etc.). * Olink is not suitable for intense activities such as mountain climbing or mooring your boat. And not intended for use with Marauder Mini.