You searched for "parallel set"
SAM
SAM 1/2 in Drive 20mm Standard Socket, 12 point, 38 mm Overall Length
Part: S-20
SAM 20mm twelve-point socket for half-inch drive ratchets.
Teng Tools
Teng Tools 1/2 in Drive 20mm Standard Socket, 12 point, 38 mm Overall Length
Part: M120520-C
Metric socket wrench for automotive and machinery maintenance work.
Facom
Facom 3/8 in Drive 20mm Standard Socket, 12 point, 33 mm Overall Length
Part: J.21
Facom metric socket for 3/8 inch drive ratchets and wrenches.
Facom
Facom 20mm, 1/2 in Drive Impact Socket Standard Impact Socket
Part: NS.20A
Heavy-duty 20mm impact socket for power tools and mechanical work.
Facom
Facom 20mm, 1/2 in Drive Impact Socket Standard Impact Socket, 38 mm length
Part: NSD.20B
20mm metric impact socket for pneumatic and impact wrenches, mechanical maintenance.