What is the purpose of the twistable end on the driver?

So you can use your palm to apply firm downward pressure on the driver, but still be able to spin it freely.

how long is the screw driver?

Screwdriver handle: 4.96 inch,screwdriver head: around 1.1 inch.

are bits standard size? can it fit typical electronic screwdrivers?

They are 4 mm bit size and will fit most interchangeable precision screw drivers that utilize this common size (can’t say for certain if 4mm is the industry “standard” because I don’t know, but that seems to be the size everyone is selling)

How is the grip when using the set?

In response to your question regarding grip, I have never felt as if my grip was going to fail while using the tool. Quality tool.

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Description

🛠️ Screw Smarter, Not Harder — Precision Meets Power

ALL IN ONE BIT ARSENAL - 24 high-hardness S2 steel bits plus 6 extra-long 45mm bits tackle any intricate repair or assembly.
TAILORED TORQUE CONTROL - Two-speed torque adjustment (0.05Nm & 0.2Nm) protects delicate electronics and powers through tougher jobs.
UNSTOPPABLE BATTERY LIFE - Screw over 400 precision screws on a single charge—work all day without pause.
COMPACT POWERHOUSE DESIGN - Slim 16.4 mm shaft and lightweight build fit perfectly in your hand and your professional toolkit.
PRECISION AT LIGHTNING SPEED - Powerful magnetic motor spins up to 170 rpm for flawless accuracy under 0.2 mm concentricity.

The Xiaomi Electric Precision Screwdriver Kit combines a high-speed magnetic motor with ultra-precise concentricity under 0.2 mm, delivering unmatched accuracy for delicate electronics. Its rechargeable lithium polymer battery powers over 400 screws per charge, supported by 24 premium S2 steel bits including long 45mm options for deep or narrow spaces. With adjustable torque settings tailored for smartphones to smart speakers, this compact, lightweight tool is engineered for professionals demanding efficiency and precision in every turn.

Specifications

Brand	XIAOMI
Number of Items	1
Head Style	Torx
Material	24 Piece High Quality Steel Cordless Drill Bit Set
Colour	Black/White
Special Feature	Magnetic Tip
Item dimensions L x W x H	20.2 x 7.4 x 2.5 Centimeters
Item Weight	2.1 Ounces
Model Name	Xiaomi Electric Precision Screwdriver Kit
Global Trade Identification Number	06934177756474
Head Size	Small/Medium
Manufacturer	Xiaomi
Model	BHR5474GL
Model Year	2022
Product Dimensions	20.18 x 7.42 x 2.52 cm; 59.53 g
Batteries	1 Lithium Polymer batteries required.
Item model number	BHR5474GL
Flash Memory Installed Size	256
Digital storage capacity	271 GB
Special Features	Magnetic Tip
Mounting Hardware	1 x Storage Case; 1 x Xiaomi Electric Precision Screwdriver;, 24 x Screwdriver Bits; 1 x Type-C Charging Cable;, User Manual
Wattage	500 Watts
Batteries Included	No
Batteries Required	No
Battery cell composition	Lithium Polymer
Data Transfer Rate	48 Gigabits Per Second
Manufacturer	Xiaomi
Item Weight	59.4 g

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