This product is exactly as described. I read a negative review but didn't consider it because the person said he didn't get what he ordered but never said he did. The only thing I could think of was that they wanted a countersink for a 1/2" screw. This has a 1/2" body that will only fit a propeller with a main head diameter of 1/2" or less. Also, most American screws use 82 degrees instead of 100 degrees. I was very happy with my purchase.