Sealey 8 piece impact socket set 3 4 sq drive metric sealey ak77 9m p this impact socket set from sealey includes 8 standard walldrive reg sockets in a range of metric sizes with 3 4in square drive p p walldrive reg sockets allow transfer of up to 30 more torque to the fixing before the risk of damage to the corners of the hexagon this also permits damaged fixings to be easily tackled p sealey ak77 9m impact socket set 8pc 3 4 sq drive metric