M38E, Minimum Diameter Motor Retainer, 38mm, with 3/16 Welded SS Eye-Bolt

Aero Pack Minimum Diameter Retainer, 38mm, with Eye-Bolt For 38mm Minimum Diameter Airframes or 38mm Motor Mount Tubes Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Red Anodizing 5/16-18 Stainless Steel Stud For Fast, Tape-Free & Tool-Free Motor Change Requires Forward Closure With 5/16-18 Threaded Hole Bonds Into Airframe With J-B Weld or High Strength Epoxy Just Slide Motor In And Screw Onto Stud Mount, That`s It! Includes 3/16 Welded Stainless Steel Eye-Bolt for Top of Retainer (Aeropack)