RAILS - Frame 1 vs Frame 2

Frame 1 Frame:

• Chromoly Steel Rails (hardened steel)
• Saddle weight about 520 grams
• Leather riveted to the frame with either copper or steel rivets
• Repairs, if necessary, must be done by SA in California
• Rails and frame are one piece

 Frame 2 Frame:

• Modular design
• Aluminum frame, tubular stainless steel rails
• Saddle weight about 420 grams
• Leather and frame connected with Nut/Bolt arrangement called a Chicago Screw
• Repairs, if necessary, can be done by you with a 2.5mm hex key
• All parts are separate