Should be 3/4 inch 1/2 inch drive impact socket(black heavy duty)...if 3/4 is too small then 13/16 socket 1/2 inch drive heavy duty impact socket(black), these are the two most popular lug nut sizes used in the automotive business except for trucks which are generally much larger.
The lug nut size for a 240sx with a four lug pattern is 10x1.25. The lug nut size is 12x1,25
The Honda CR-V lug nut size is a 19 mm lug nut. The 2000-2002 size was a 21mm lug nut.
what are specs for the 2003 C230 lug nut size
the lug nut size on your Honda civic is a 19mm .....
76 ft/lbs (103 Nm)
Lug nut sizes vary from vehicle to vehicle.
Lug nut is 12mm x 1.5 Conical seat for oem wheels.
The lug nut size for a 2005 Honda Odyssey EX is 7/8". Lug nuts are used to secure an automobile's wheel to its axle.
12x1.5mm
21MM
It is probably a 19mm. The best way to find out is to go to the parts/hardware store and thread the lug nut onto a bolt and which ever size bolt it fits that will be the size of the lug nuts.
A website named bransport.com carries lug nut removers for various size lug nut locks. It uses a reverse thread that tightens on the lug nut as you turn it counter clockwise to remove.