Stanley combination spanner set of 6 metric 10 to 17mm stanley 4 87 053 maxi drive plus is a uniquely shaped jaw that locks the spanner onto the nut locking applies to the faces of the nut thus preventing the risk of slipping li a high quality metric combination spanner made from chrome vandium steel which conforms to iso3318 din3313 li set of 6 1 of each size 10 11 13 14 15 and 17mm stanley 4 87 053 combination spanner set of 6 metric 10 to 17mm