New holland TC29-9x3 Woods 1012 FEL, Woods, 7500 Backhoe / Kubota L345DT 4WD, Kub FEL, Kub Backhoe
It comes several blocks to a box. And off the top of my head I think each block is 1 1/2"x5 or 6". They can be found at mostgrocery or hardware stores with canning supplies.
There's also another paint I'm thinking of trying called POR-15. They claim their paint will not chip or crack off on the most demanding jobs. They do have a web sight but I don't know it.