Overview Reviews Product Description Lift ADAPTER EXTENSION for stacking "pin and socket" type adapters. 2" extension with 1-1/2" pin (for 1-1/2" socket hole). Product Videos Custom Field Product Reviews Write a Review Write a Review × EXTENSION, 2"; for Pin and Socket, 1-1/2" pin. Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *