I discovered while cleaning my windshield, that my early 250 SL wiper blades were shot and I set about to replace them. $75/each for a refill from Bud's Benz?!? Well, that wasn't about to happen. I checked some previous threads here (couldn't post on the more relevant one, no reply button) and saw that the 47-600 refill from Trico was recommended. That's 6mm wide. My arms and Bosch blades (what holds the refill) are original. The claw has an interior width of 9.5 mm, no way a 6mm refill was going to work, as were all the wipers I saw at auto stores (would just pull the refill out), too narrow. Through online research, I found that Trico makes a 47-800, an 8mm refill. I could find no larger. So, I found the one local store here that had them in stock, $8.99 for the pair, I don't know 26" long? They have the snap off steel inserts. Picked up the pair and checked the fit. Obviously, it was narrower than my claw, but that was easily remedied by slightly squeezing the claws to match the refill. Then, cut (not snapped - snaps too long) the steel inserts to size (a touch longer than the stock ones because of play in the retaining clip of the new steel inserts), cut the rubber refill and slide into the blade. Perfect! Original blade, new refills. Only clue, the refill retaining mechanism on the steel stiffeners rather than an indentation in the refill rubber for the claw. For $141 difference for a maintenance part, that's fine with me. Added bonus, the refills are so long, I only had to use one for the two 12" blades. I have an extra set ready to go, 4 refills for $9! Take that Bud's and Mercedes.