PRO PARTS PLACE Fastest shipping! Reasonable prices! Quality products! Great feedback! This sale is for (1) 16" 3 REAR SLOTS blade shank. Not a lot to say here but the specs are listed below. 3/4" thick Hole spacing: Measuring from the top going down the center hole is 1", 4" & 7". 18" long ************18" long (not 16") if you are not replacing the set make sure to check and see if you have 16" rippers or 18" rippers. If replacing all it doesn't matter but if you are replacing some you will be snaggle toothed!*********** 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.