Bosch 11335K-RT 120V Jack 1-1/8-Inch Breaker Hammer Kit (Certified Refurbished) Reconditioned Bosch Products have a One-year warranty through the Bosch factory or an authorized service center Unmatched Power to Weight Ration - 34 ft-lbs Impact Force - faster removal rate in its class by far! Active Vibration Control Handle - a unique flexible two-handed design that reduces vibration by 40% over the closest competitor Versatile Bit Retention - Accepts Bosch 1-1/8" Hex Steel as well as standard 1-1/8" air steel Total Comfort and Control - Articulating Auxiliary Handle to maintain the best working posture possible.