I checked out the KK HD blade at Big R and it retailed for $599 - it looked bullet proof - but I am still gun shy. I have decided to opt for the Woods RB72 with tilt for $385 from my dealer - he might cut me a deal since I bought my TC33D from him.
Mutt,
I purchased the exact same box blade this summer and have given it heck in this rocky mountain soil and it has held up great. United is made by lienbach,
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Take care all, Jim
2001 B7500 HST 302 Fel R4 Tires, Befco BRB60
Semper Fidelis