Blendhouse has put together one of the most versatile and user-friendly concrete countertop bag mixes on the market today. The best concrete countertop mix starts with using the best ingredients. The HB7 GFRC Series concrete countertop bag mix can be used as 4 main types of concrete mixes: Hand Troweled & Cast in Place, Face Coat Mixes - Backer Mixes - SCC / Self Consolidating Mixes. Common applications for Blendhouse Bag Mixes include: concrete countertop mix, concrete sink mix, concrete table mix, concrete wall panel mix, precast concrete mix, cast-in-place concrete mix, GFRC bag mix, high-strength concrete bag mix.