interlocking hollow concrete block molds for sale

1. The interlocking block mold can replace the normal block machine to produce the concrete blocks for your house building,

2. The final block from this mold is with smooth surface and easy to paint and decorate the indoor and outdoor wall.

3. Most importantly, this block can be 100% interlock together which will save more cement during building and and much more efficient to save time to build a house.