Manuals Brands Harbor Freight Tools Hammer Drills Harbor Freight Tools Hammer Drills Manuals ProdManuals has more than 4 Harbor Freight Tools Hammer Drills manual(s) covering 4 model(s). 1 Models Document Type 1 1_1/8 in. 10 Amp Heavy Duty SDS Variable Speed Rotary Hammer 1/2 in. Heavy Duty Variable Speed Reversible Hammer Drill 1 in. 7.3 Amp Heavy Duty SDS Variable Speed Rotary Hammer 1/2 In Variable Speed Reversible Hammer Drill