-The highest quality with the most competitive price.- High performance of disassemble.- Three forward and reverse speeds design guarantees efficient operation. - Lightweight and ergonomic design helps to reduce fatigue.- Widely used for workshop and industrial applications. Square Drive: 3/4"Free Speed: 4500rpmMax.Torque: 680N.mHammer Mechanism: Single HammerAir Inlet(npt): 3/8"Air pressure: 90psiNet Weight: 4.4kgอ่านเพิ่มเติม