I just checked, the hex head is 1/2 inch so the 5/16 should be correct. Wouldn't' be a bad idea to take some coarse and fine though.


1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy