I purchased four of these 1/4 inch shaft collars from Ruland. They were beautifully and accurately made. I have three sets of rods, WE-furnished 8 inch and 12 inch, and a third party’s 13 inch rods. The Wicked Edge furnished factory rods have a diameter of 0.256 inch along their entire lengths (measured with a dial caliper), and the Ruland collars will NOT fit onto those rods, even if you remove the locking screw. But…the Ruland 1/4 inch locking collars fit perfectly onto the third party’s rods, and my micrometer showed that they measured exactly 0.250 inches. So this is not Ruland’s fault.
I have no idea for Wicked Edge’s reason for engineering 0.256 inch rods, which work just fine to sharpen my knives. Fortunately, the stop collars are probably most useful on the 13 inch rods.
