Sealey 16 piece impact socket set 1 2 sq drive deep metric sealey ak5816m our premier range of high quality impact sockets has been consolidated to form one of the most complete ranges available to the automotive technician all sets use the duometric selection principle where no imperial size socket is included where there is a metric equivalent this method gives maximum coverage of sizes with the minimum number of sockets all sockets are walldrive and allow transfer of up to 30 more to