Abbey Tools DUB Self Extracting Cap ToolDedicated socket is built to engage all 4 of the holes on a SRAM dub crank arm dust cap Features a common 3 8 inch square drive like the rest of our socket range and also has a hexagonal exterior so you can mount them in a vise and use the crank arm as the lever if so desired Marked for lefthand thread Fabricated from anodized alloy Made in the USA; Bend, Oregon TECH SPECS description SRAM Dub crank dust cap tool compatibility SRAM Dub