Don't tell me you've never heard of the imperial system...
1" (inch) is 25.4mm
3/16" = 5mm near enough
1/2" = 12.5mm
Wrench is American for spanner, unfortunately.
1" (inch) is 25.4mm
3/16" = 5mm near enough
1/2" = 12.5mm
Wrench is American for spanner, unfortunately.
