Comparison : Item # 302-8-8, 1.188 Inch (in) Dimension A, 1.940 Inch (in) Dimension C, and 3/4-16 Thread CD61 SAE Straight Thread Split Flange Adapter
Item # 302-12-12, 1.500 Inch (in) Dimension A, 1.890 Inch (in) Dimension C, and 1 1/16-12 Thread CD61 SAE Straight Thread Split Flange Adapter
Item # 302-16-12, 1.500 Inch (in) Dimension A, 2.160 Inch (in) Dimension C, and 1 5/16-12 Thread CD61 SAE Straight Thread Split Flange Adapter
Item # 302-12-16, 1.750 Inch (in) Dimension A, 2.020 Inch (in) Dimension C, and 1 1/16-12 Thread CD61 SAE Straight Thread Split Flange Adapter
Item # 302-16-16, 1.750 Inch (in) Dimension A, 1.890 Inch (in) Dimension C, and 1 5/16-12 Thread CD61 SAE Straight Thread Split Flange Adapter