The SF 4-A22 is Hilti's first high-performance brushless compact drill/driver with built-in Active Torque Control that stops the tool body from spinning uncontrollably. This allows the operator to maintain productivity on the jobsite by helping prevent overextension or twisting of the wrist. With a brushless motor， all metal gears and drop resistant housing are designed to last.
Package includes one 22-Volt Lithium-Ion SF 4-A22 cordless brushless compact drill driver (tool only) (2177406)
Maximum torque (soft/hard joint): 314 in-lb (soft joint)， 549 in./lbs. (hard joint)
No load RPM: gear 1: 610 RPM， gear 2: 2100 RPM，
Chuck clamping range: 1/16 in. - 1/2 in.
Powered by brushless motor， plus all metal gears and drop resistant housing
Applications include drilling through metal， wood， drywall， plastics and many more base materials
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