Ingersoll Rand 311A 6-Inch Heavy Duty Air Dual Action Quiet Sander Technical Details - Ultra quiet dual action sander ideal for sophisticated, fine-detail work - Features a built-in silencer that muffles noise as you work - Dual-action pad motion produces swirl-free finishes - Adjustable built-in regulator offers positive speed control - Weighs 4 pounds; 1-year limited warranty http://www.bestbuyking.co.cc/Buy-Ingersoll_Rand_311A_6_Inch_Heavy_Duty_Air_Dual_Action_Quiet_Sander-B00004XOSZ.html