PRO PARTS PLACE Fastest shipping! Reasonable prices! Quality products! Great feedback! This sale is for (1) brand new complete harrow bearing assembly. This is for harrows using the 7-1/2" disc spacing. A lot of folks still call them box bearings, but they will fit literally hundreds of different of manufactures models of harrows. Very simple design that has been getting the job done for a long time. This will fit the 1" square axles. REPLACES KING KUTTER 504110 You will get in this sale the complete assembly. (2) bearing halves with grease fittings. (1) 7-1/2" ribbed bearing spool for 1" square axle (2) bolts, nuts & flat washers. Bolts are 5" long and the hole spacing from center to center on the 2 bolts is 3-1/4" (which is standard on 99% of them). 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.