double open end screwdriver
single open end spanner
bm=1d Double end studs--bm=1d
bm=2d Double end studs bm=2d
double close end spanner
double end 15 degree angle wrench
double end adjustable spanner
double end adjustable wrench
double end face grinder
Double end face seal centrifugal pump
double end flat die thread rolling
Double end forward converter