8pc 3/8" Dr Cr-V Slim Flare Nut Crowfoot Wrench with Rail Set Metric 10-19mm

It is perfect when a typical socket is too large or the application prevents you from getting over top of the fastener. Sizes included 10, 12, 13, 14, 15,17, 18, 19mm. Socket rail holder included with pre-drilled holes ideal for mounting.