GEARWRENCH Set Socket Dp Met 3 8 r 12Pt 14Pc Battery Jump Starters Model Option PCF1016 FLOR XS XS PCF1016 FLOR S Size:1 9 16in Model Option PCF1016 FLOR XS XS PCF1016 FLOR S S PCF1016 FLOR M M PCF1016 FLOR L L PCF1016 FLOR XL XL PCF1016 FLOR 2XL 2XL PCF1016 FLOR 3XL 3XL PCF1016 FLOR 4XL 4XL PCF1016 FLOR 5XL 5XL PCF1016 FLOR 7XL 7XL a 5% solution is sufficient but higher concentrations may be used for heavy corrosion Our off corner loading design reduces fastener rounding and the chamfered opening help guide the socket on to fasteners Off corner loading design reduces fastener rounding Chamfered opening quickly guides fasteners into socket Serration depth inside the socket is as deep as the fastener hold it in the correct position Hard stamped size markings Double line (SAE) and knurled (metric) ring help easily identify standard and metric sockets Bright