Ultra-transparent epoxy resin Set 750gr Extra UV resistant, ultra-bright , maximum strength 600gr a ( resin) + 150g (B) Hardener : Total 750gr ; touch dry in 2 days , 2-4 days full dry ; a lively and brilliant Structure ; maximum strength ; Slow-drying formula with a minimum level of air bubbles ; mixing ratio 4A:1B ( must be weighed with a precision balance) ; Extra UV resistant , does not yellowing ; ultra-transparent surface ; the minimum recommended casting thickness : 4mm ; the maximum recommended casting thickness : 20mm ;