'Compact brushless' cordless multi sander





- Digital brushless motor: More power, more efficiency and 10x longer lifetime
- Ergonomic compact palm-grip design for easy one-handed use
- Multi-shape sanding base for both large surfaces and corners
- Patented internal set-up and VRS for extremely low vibration
- Three special attachments for sanding hard-to-reach surfaces
- Easy 'Clic' mechanism for turning or replacing delta tip, and for mounting special attachments without using tools
- Lithium-Ion technology: no memory effect, no self-discharge and always ready for use

KEEPCOOL™
Our patented ‘KEEPCOOL™’ technology prevents batteries from overheating and improves battery performance.
Discover KEEPCOOL™ACTIVCELL™
Our intelligent ACTIVCELL™ technology continuously monitors the voltage, temperature and current of the battery. Transmitting this information to the tool in real-time, it helps extract the right amount of energy from the battery for the job.
Discover ACTIVCELL™

Compact Brushless Range
Accessing those hard-to-reach tight spaces, working overhead or for an extended duration is no longer a problem, thanks to the SKIL compact brushless range. These tools are extremely compact and offer a combination of high performance, durability and an unmatched level of convenience.
Discover Compact Brushless RangeVRS+ Technology
SKIL’s advanced ‘VRS’ system reduces vibration without compromising on power or performance.
Discover VRS+ Technology

CLIC
Changing special attachments on the SKIL multi sanders 7261 and 3720 has never been easier, thanks to the Clic system. With a swift click, you can secure the attachment in place and you’re good to go.
Discover CLIC

PWRCORE 20™ SERIOUS POWER AND PERFORMANCE.
PWRCORE 20™ is the perfect choice for bigger projects. The serious power and performance allow you to complete every task at hand with ease.
Product Description
Compact brushless cordless multi sander for convenient one-handed sanding
The ‘20V Max’ 3720 cordless multi sander is part of SKIL’s compact brushless range. These tools are extremely compact and offer a combination of high performance, durability and an unmatched level of convenience. Like all other SKIL ‘20V Max’ cordless tools, this model is powered by the industry-leading advanced ‘PWRCORE 20™’ battery and charger technology. Our SKIL 3720 brushless cordless multi sander allows you to tackle a wide variety of jobs: from sanding large surfaces and corners to sanding even the most hard-to-reach areas. The ergonomic, extremely compact, lightweight design makes this tool ideal for one-handed and vertical use. Exquisite test results of the SKIL 3720 show a very long runtime: over 50 minutes with a 2.5Ah battery and over 100 minutes with a 5.0Ah battery (tested on pine wood with sanding paper grit 120, applying 3 kg of weight). The patented internal set up with ‘VRS’ for extremely low vibrations enables continuous work for an extended duration, without fatigue. Supplied with extra attachments for sanding in narrow spaces and a unique flexible attachment that adapts to all kinds of round shapes, this powerful multi sander handles your sanding jobs with ease. And changing these attachments is also very easy thanks to the ‘Clic’ system, which doesn’t require any special tools or keys. The digital brushless motor delivers more power, more efficiency and a 10x longer lifetime than a comparable brushed motor. The high-quality dust-sealed ball bearings make sure the dust is kept away from critical internal parts, increasing the tool’s lifetime. The SKIL 3720 CD is supplied with a turnable delta tip, three special sanding attachments, 24 sanding sheets and a dust bag. The battery and charger aren’t included.
‘PWRCORE 20™’ industry-leading battery technology to power all SKIL '20V Max' tools
The ‘PWRCORE 20™’ system consists of industry-leading advanced battery and charger technology, plus innovative features you won’t find anywhere else, such as our patented ‘KEEPCOOL™’ battery cooling technology which increases the runtime by up to 25% and doubles the battery lifetime. Whereas the patented ‘ACTIVCELL™’ technology safeguards a maximum performance and optimal battery protection. The ‘PWRCORE 20™’ batteries and chargers are 100% compatible and interchangeable with all SKIL ‘PWRCORE 20™’ power tools and garden tools for ultimate flexibility.
Specifications
| Performance Level | ADVANCED PERFORMANCE |
|---|---|
| Battery type | Lithium-Ion |
| No Load Speed (rpm) | 10.500 |
| Voltage Max | 20 V Max |
| Net weight excl. battery | 0.7 kg |
| Sanding movements | 21.000 p.m. |
| Total sanding surface | 151 x 102 mm |
| Turnable delta tip size | 93 mm |
| Total sanding surface (orbital+delta) | 102 x 62 + 93 mm |
| Total sanding surface (finger-shaped attachment) | 87 x 32 |
| Sanding sheet size orbital | 102x151 mm |
| Total sanding surface (flexible attachment) | 54 x 54 mm |
| Total sanding surface (Louvre attachment) | 93 x 93 mm |
| Power Platform | PWRCORE20 |
| Brushless | Yes |
| EAN | 4894863200259 |
| Sanding orbit diameter | 1.6 mm |
| Power source | Direct Current |
| Sound pressure | 76 dB |
| Uncertainty Vibration (K) | 1.5 m/s² |
| Vibration level | 4.78 m/s² |
| Sound power | 87 dB |
| Uncertainty noise pressure (K) | 3 dB |
Packaging contains
- SKIL 3720 brushless cordless multi sander
- Sanding sheets (24x)
- Turnable delta tip
- Special sanding attachments (3x)
- Dust bag
- Instruction manual
Available documents for this tool

































