The Abbey Bike Tools Crombie Socket Tool is designed for those who want the functionality of the Crombie Tool in a form that is compatible with ratchets and torque wrenches. Precision machining ensures it will achieve tight tolerances, and thus avoid slip or marring of cassette splines.
Available in either a Campagnolo format, which is compatible with all Campagnolo cassettes, or an S-Group format, which is compatible with modern Shimano and SRAM cassettes and RockShox suspensions that use S-Group lockring splines, it's made to integrate with your favourite rachet or torque wrench. It thus features a 3/8” square drive, unlike other socket tools.
Other handy features include Abbey Bike Tools' signature finger splines, which allow you to get a firm purchase, and enough depth to hide the quick release skewer, so that you can gain full engagement with the lockring without removing it.