Ox Rubber Line Blocks (one pair)
Two Ox Brand Rubber Masonry Line Blocks. I couldn't find these nice rubber line blocks available anywhere in lots of less than 40 blocks. So I decided to buy them by the big box and resell them to my fellow masons who don't want to buy that many at a time. These work great on shorter brick and block runs but since they're made of hard rubber, when put under too much pressure the block will deform and tear. So they're not good for long block wall runs where the line is stretched extremely tight.