The ClearPlus 78 Series HD Windshield Wipers # CP78321 are slightly smaller than 1/2" wide and fit inside wiper arms between 1/2"-5/8" wide. I would check to make sure that your washer sprayer hoses don't actually attach to the arms instead of the wiper blades, but as long as the clamps that attach the sprayers onto these are not larger than 1/2" wide, you will be able to mount them on the blades. view full answer...