Machined 12g pure tungsten framework weight. The loads are smaller than the metal loads as they are easier to install with a cleaner design. The super small loads cause reduced CG comparing to standard weights. Produced from very uncommon and hefty pure tungsten product, not a typical tungsten mixture. The pure tungsten gets the greatest density structure and is the heaviest steel product allowing to create littlest size loads comparing to virtually any other materials. Fast & easy attachment to chassis. Marked with weight value for simple identification. Fits T4'20 & T4'21 Dimensions: 34mm x 17.5mm x 1mm