Abbey Bike Tools SRAM DUB Self-Extracting Cap Tool Description: The Abbey Bike Tools SRAM Dub Crank Dust Cap Tool is a dedicated socket that engages all four of the holes on a SRAM DUB crank arm dust cap for easy removal. Features: Dedicated socket is built to engage all 4 of the holes on a SRAM dub crank arm dust cap Features a common 3/8" 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