Powerful & Efficient: This air needle scaler delivers 3400 BPM high-frequency strikes for strong impact force, efficiently removing rust, paint, weld slag and dirt on metal surfaces. (Air Pressure: 90PSI ; Air Inlet: 1/4 NPT) 3-Speed Adjustment: Designed with 3-level average air consumption (Gear 1: 12.5 CFM, Gear 2: 12.5 CFM, Gear 3: 12 CFM), this VEVOR pneumatic needle scaler allows you easily adjust the intensity to suit your rust removal tasks—whether for light and heavy-duty rust Easy to Use: Featuring a responsive trigger and one-button start function, this needle scaler air tool is simple to operate—no need to change triggers. Its straight-type design offers a comfortable, fatigue-free grip and easy access to tight spaces Durable Construction: Built with a rugged A3 steel shell and 19 hardened needles, this compact needle scaler delivers reliable, long-lasting performance for rust removal tasks. Multiple Applications: This air-powered needle scaler is ideal for removing rust, paint, and weld slag from metal surfaces, plates, pipes and more. Compact and lightweight yet powerful, it's a reliable tool for construction sites and repair workshops.