DescriptionWith Holes : NoApplication : Industrial MagnetComposite : Rare Earth MagnetModel Number : HfShape : BlockType : PermanentOrigin : Mainland ChinaCertification : CEProduct detailsName:Hafnium cubeCube size:10X10X10mm (0.4")Weight:13.3gramsPurity:99.9%Used:element collections, dispplay, hobbies, DIY, experiments, promotional gift, etc.Product features.1.10mm density cube made of 99.9% pure Hafnium metal2.Each cube made from high purity metal and featuring attractive, ground surfaces and laser etched labels3.Precision machined for super flat facets and 0.1mm tolerance to come very close to theoretical density4.Every cube perfectly finished with sharp edges and corners and no burrs5.YEEMEIDA now carries over 40 elements on the periodic table as density cubesMain ProductsPeriodic Table (All elements with blue color can be provided by us)About ShippingWe provide free shipping for most of the products. Some are with economy shipping and some are with express shipping.For economy shipping, there are many options, including Aliexpress Standard Shipping, ePacket, Korea Post, POS Malaysia, Special Line Yanwen, etc. Most of the packages can be delivered within 10-35 days, but for some countries, economy shipping may take up to 60 days (Brazil may take 90 days). Please dont hesitate to contact us if we can be of any assistance.For express shipping, FedEx IE&IP, DHL, EMS, SF Express are also available. Express shipping usually takes 4-12 days for a delivery.If the shipping company do not ship the iterms to your country .Contact us by email or Ali TradeManager. We will try our best to help you After Sales and FeekbacksAfter Sales and FeedbacksYou satisfaction and positive feedback is very important to us.Please leave positive feedback and 5 stars if you are satisfied with our items and service.If you have any problems with our items or services,please feel free to contact us first before you leave negative feedback.We will do our best to solve any problems and provide you with the best customer services.Your encouragement and support is our continuously forward momentum.Thank you very much Best Wishes