Bitex Quick Release Hub Skewers

Basic but good quick releases made by Bitex in Taiwan.  These QR's feature a steel axle for strength.  Titanium axles stretch, and reduce clamping force.  The Bitex quick releases have steel faces which bite into frame. That is what ya want, but what most QR's lack.  How can an aluminum faced QR bite into a harder steel frame?  Can't!   100 / 130-135mm.  Cut the 5mm off if you want for road hubs, or let it all hang out.   Sold as a pair. Blacl or Silver lever & Black everything else.