Aeropack Min Dia Extend Set 5/16

For 38mm & 54mm Minimum Diameter Retainers Allows Use Of Shorter Length Motors Includes 4 extensions, one each  M1E1.8 ,  M1E2.2 ,  M1E3.0 ,  M1E4.5 Precision Machined 6061-T6 Aluminum With Mil-Spec Type II Red Anodizing 5/16-18 Stainless Steel Stud & 2 Stainless Steel Jam Nuts Attaches To Motors Forward Closure Just Slide Motor In And Screw Extension Onto Retainers Stud Mount, That`s It!