1Reversible Design: The pneumatic air drill has CW and CCW switch, and the switching is convenient. 2Double Bearing Spindle: Double bearing main shaft, and 2 supporting points, has higher concentricity and stronger force. 3With 3 Jaw Chuck: The 1/2in pneumatic air drill 3 jaw chuck design, thickened and hardened, can be 360 degree strong bite. 4Accurate Drilling: Imported movement and fine machining of steel make the clamping and drilling more precise and firm. 5Wide Clamping Range: The clamping capacity is 1.513mm, and it can be drilled on the surface of wood, iron, aluminum, wall, etc. Item Type: Pneumatic Air Drill Model: KV-5113B Material: Steel Purpose: Drilling holes on wood, iron, aluminum, walls and other surfaces Working Pressure: 0.6-0.8Mpa Free Speed: 900rpm Air Inlet Size: 1/4in Clamping Capacity: Approx. 1.5-13mm / 0.06-0.5in Maximum Drilling Diameter: Approx. 13mm / 0.5in 1 x Pneumatic Drill 1 x Drill Bit 1 x Hanging Ring When in use, do not overload or idling at high speed to prevent premature wear of the machine. Lubricating oil must be injected from the inner hole of the connecting pipe 34 time. If a secondary impact is found during use, the machine should be shut down for inspection immediately, and disassembly on site (referring to unclean places) is prohibited, and it should be sent to the repair department for inspection in time.