This tool makes it easier when you want to make a belt deflection adjustment on your STM Tuner Secondary. Uses a ⅜" drive ratchet for better leverage.
How To Video CLICK HERE
Turner adjustment nut with 1/4"-20 tapped holes to use a bolt to open the secondary while leaving the adjust nut in place.
Must be used with adjuster nut washer Sku: 1001716
