Comparison : Item # ER 1510SS, 1 1/2 x 1 Inch (in) Size 316 Stainless Steel Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 2015SS, 2 x 1 1/2 Inch (in) Size 316 Stainless Steel Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 3020SS, 3 x 2 Inch (in) Size 316 Stainless Steel Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 3025SS, 3 x 2 1/2 Inch (in) Size 316 Stainless Steel Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling
Item # ER 4030SS, 4 x 3 Inch (in) Size 316 Stainless Steel Type ER Male Adapter x Shank Reducing E Cam and Groove Coupling