Genuine, OEM Replacement Part Replacement socket 10mm, part number 86-098D Compatible with: DWMT72165, DWMT72164, DWMT72163 Measures approximately 1.80 X 7.70 X 0.60 inches Replacement OEM Sockets Sets part# 86-098D. Compatible with: DWMT72165, DWMT72164, DWMT72163