brushless motor the low maintenance and powerful brushless motor ensures maximum power with longer run time compared to conventional carbon brush motors. the maximum rotational torque of the electric drill is 90nm, which can easily meet the drilling and clamping requirements of different wood, plastics, stones and metals. 3 in 1 system the tihook combination drill bit can be set to 3 working modes: screws, drills and hammer drills. the electric drill has two different speed ranges (0-550rpm, 0-1850rpm) and has 25 torque speeds to choose from, which can be selected according to the needs according to the use scenario. optimal working mode for more precise torque when drilling and screwing. fitment: for ma-kita series: bl1830 bl1840 bl1850 bl1860 bl1430b bl1460b bl1860b bl1830b bl1850b bl1860b bl1890b etc. optimal balance between performance and price. (without battery) quick release chuck the cordless screwdriver with the redesigned chuck can be installed and removed quickly. the drill bit is reversible, lockable and features a 3/8" (10mm) locking liner for quick bit changes. compared with plastic or hybrid chucks, the metal drill bit provides a firm grip when drilling into wood, metal or plastic, chuck arms are stronger. reflective design a built-in forward-facing led work light illuminates any dark work area. the electric drill weighs about 0.9kg, fits well in the hand and is easy to use. the body adopts ergonomic design, the screws are tightened easily and efficiently, and fatigue when working is greatly reduced.