We have Ingersoll-Rand 4DA2SA 4da2sa Hammer Chipping Hammer with Product Detail Package Quantity: (1) Unit Type: 4-Bolt Chipper with Spring Retainer Stroke Length (Inch): 4 Blows Per Minute: 1600 Type of Power: Pneumatic . The "Ingersoll-Rand 4DA2SA 4da2sa Hammer Chipping Hammer" is best product for you. We recommended Ingersoll-Rand 4DA2SA 4da2sa Hammer Chipping Hammer