Reference numbers: 100-7708, 1007708 Stud dimensions: Thread Size: M12mm x 1.50 RH ; Under head Length (in): 2.500 in. ; Knurl Diameter (in.): 0.509 in.1set=10pcs in a package.(10pcs bolts) Direct fit OE replacement Extended Length Wheel Stud Kit ( longer Under-Head-Length than stock replacement) Fits for 1982-2002 Chevrolet Camaro, 1984-2011 Chevrolet Corvette, 1982-2002 Pontiac Firebird. Fits for 1982- Ford Courier, Escort, EXP, Tempo, Taurus, 1989- Ford Thunderbird Aftermarket Product Meets or Exceeds OEM Specs for Fit and Performance. Come with 2 years W-Arranty