Ride’s Know your Roll: Profile Sabre Sprocket.
Profile’s Hidden Treasure: The Sabre sprocket which is adaptable to all 48 spline spindle sizes in both spline drive and bolt-on options for your sprocket.
Ride covers the details most properly here…click the link and get some insight.
http://bmx.transworld.net/features/know-your-roll-profile-sabre-sprocket/#8749+b9e9b3eaf3