The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. berserker jack hammer 65F Merchant Video Easy To Use The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Hex Shank Tool Free System Merchant Video 1-3/16" Hex Tool Free System ATTENTION: The Berserker 65F is only adapted to 1-3/16" (30mm) Hex shank chisels!!! Check the chisel angle, insert the chisel into the machine, remove the pin and rotate it 180° to lock the chisel. The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Lock-On Button Merchant Video Lock-On Button Designed to allows us not to control the start button all the time, added user comfort during extended periods of work. The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Adjustable Handle Merchant Video 360° Adjustable Handle Designed to optimize working angles for maximum comfort when chiseling in narrow space or in a wide variety of positions. Vibration Control System Designed to decrease the vibration effectively, reduce fatigue and offer a better using experience. Carrying Case with Wheel It's convenient to storage and transportation. Wide Application Pavement Break Home Demolition Concrete Trench More Scenarios What jobs is the Berserker 31 lbs jack hammer best suited for? Suitable for heavy duty work such as breaking and digging of concrete pavements,/masonry/blocks/bricks and also for demolition of concrete slabs, petroleum chimneys, mining and house foundations. What type of chisel does the 65F jack hammer fit? Only adapted to 1-3/16" (30mm) shank chisels!!! Need more parts, search “Berserker 1-3/16” Hex chisel” on Amazon. When do I add grease and replace the carbon brushes? Add grease about 1.7 ounce at a time when hammer drll weakness is noticed. Also,replace the carbon brushes when an odor or sparking is noticed. Replacement parts can be found on Amazon by searching for “Berserker grease or carbon brushes”. What should I do if I have problems with demolition hammer? You can contact via amazon and we will provide you with a solution. Berserker Concrete Demolition Series Jack Hammer 65F Add to Cart Demolition Hammer 45HM Add to Cart Demolition Hammer 55HD Add to Cart Jack Hammer 65H Add to Cart Jack Hammer 125K Add to Cart Customer Reviews 4.7 out of 5 stars 176 4.7 out of 5 stars 395 4.6 out of 5 stars 39 4.7 out of 5 stars 140 4.7 out of 5 stars 176 Price $249.79$249.79 $119.79$119.79 $149.79$149.79 $199.79$199.79 $799.79$799.79 Weight 31 Lbs 12 Lbs 15.58 Lbs 25 Lbs 51 Lbs Impact Energy 40.6 Ft.lbs. (55 Joules) 11.1 Ft.lbs. (15 Joules) 18.44 Ft.lbs. (25 Joules) 33.2 Ft.lbs. (45 Joules) 62.7 Ft.lbs. (85 Joules) Power 1700 Watts 1300 Watts 1300 Watts 1700 Watts 2100 Watts Amp 14 Amp 11 Amp 11 Amp 14 Amp 17 Amp Chuck Type 1-3/16" Hex SDS-Max SDS-Max SDS-Max 1-3/16" Hex Drill Mode ✘ ✘ ✘ ✘ ✘ Chisel Position Adjustment ✘ ✔ ✔ ✔ ✘ Variable Spees Control ✘ ✘ ✘ ✔ ✘ Applicable Scenarios Heavy concrete demolition work Lightweight floor/wall removal Medium-duty floor/wall removal Heavy concrete demolition work Concrete road demolition