PRO PARTS PLACE Fastest shipping! Reasonable prices! Quality products! Great feedback! This sale is for (5) 18" NOTCHED DISC BLADE. 3.5MM OR 9 GAUGE (Not the thinner 11 gauge) Double stamped to fit a 7/8" square axle or a 1" square axle. Please look at the pictures if you are unsure how that works. It is just stamped twice at different angles. 1-3/4" concavity 8.90 lbs EACH****Please remember this is a metal harrow disc. It may have a little paint rubbed or scratched from shipping. You are putting it in the dirt which will rub the paint off and scratch it. Â· Disclaimer: We list model numbers and part numbers for references only. At times the same model may take different parts based on serial number breaks or manufacturers specifications. We list all the specifications on the part (size, width, length, thickness, etc.) and YOU must know what is needed on YOUR application. We canÂt possibly make it more known as to what you are receiving when you purchase.