We have 4 used 3" I.D. Steel Axle Clamp Rings.You might be able to use these. Recycling one ton of cardboard saves over 9 cubic yards of landfill space. Alaska and Hawaii usually cost about double.
Wehrs WM293 Suspension Limiter Chain Clamp 3in Axle Clamp Steel Black 2-Piece
[SR] Parallel 4 Link Axle Brackets 3" Axle 9/16" Holes 1/4" Steel Air Ride Bags
4 x 2.25" Stainless Steel T Bolt Clamp Turbo Intake 2-1/4" Silicone Hose Clamp
Parallel 4 Link Tabs for 4" Axle - 1/4" Steel - Brackets Custom Mounting
Ti22 TIP3250, One Black Aluminum Steering Damper Axle Clamp 2-1/2In Axle Black
JDM BLUE 4PLY 2x Straight 4"-4"ID Silicone+ 4xStainles Steel T-clamp