Comparison : Item # ER 1510AL, 1 1/2 x 1 Inch (in) Size Aluminum Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 1530AL, 1 1/2 x 3 Inch (in) Size Aluminum Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 2010AL, 2 x 1 Inch (in) Size Aluminum Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 2015AL, 2 x 1 1/2 Inch (in) Size Aluminum Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 2025AL, 2 x 2 1/2 Inch (in) Size Aluminum Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling