Rapid Optimum Charger has a built-in fan to cool the battery for faster, more efficient charging (battery and charger sold separately) Cordless drywall screw guns are often sold as “bare tools” (without a battery or charger). If the user doesn’t already own compatible batteries, this can add a considerable amount to the price. Pay attention to the amp hour (Ah) rating of batteries. This can be compared to fuel: the higher the number, the longer the battery will run between charges.

An important feature of most drywall screw guns is the nose cone, which surrounds the gun’s screwdriver bit. As the screw is driven into the drywall sheet, the nose cone provides a depth stop, so the screw head is sunk just below the surface (to be hidden by filler), but not driven too deep. The 6-amp motor produces super-fast driving of 5,300 rpm. This makes the DeWalt corded drywall screw gun ideal for use with metal studs or joists, which are increasingly popular but tougher to pierce than wood. The nose cone has three-position depth adjustment. Helical gears, which mesh more easily than straight-cut alternatives, provide renowned DeWalt durability. The Makita 199146-8 Collated Autofeed Screwdriver Magazine Attachment delivers easy and reliable autofeed capability. The compact, ergonomic autofeed design offers less weight and efficient power. Its ideal for production board attachment to metal or wood. Collated screw length capacity ranges from 25mm to 55mm for increased versatility. For use with specific Makita corded and cordless screwdrivers. The brushless motor drives the Milwaukee at 4,500 rpm. Milwaukee claims its batteries last three times longer than competitors, though it doesn’t estimate their lifespan or make any direct comparisons. At 2.5 pounds, the tool is among the lightest in its class. A battery adds about 1.5 pounds. Autofeed Screwdriver Magazine features a collated screw length capacity range from 1" to 2-3/16" for increased versatilityWith a weight of 3.7 pounds plus a battery of 1.4 pounds, it is somewhat heavier than its rivals, but it is designed for two-handed operation. There have been a few issues with jamming, particularly with the use of cheap collated screws. We would recommend Makita’s own screws for consistent performance. Key features are the adjustable screw holder that securely grips the screw while driving and frees up one hand. A thumb-operated bit changer rotates easily to any of six preloaded bits that then slide into place, ready for use.

The FS6200 has an ergonomic grip for increased comfort, and a cast aluminum gear housing for less weight (only 3.0 lbs.) and increased durability. Other features include a depth locator holder for convenient storage during framing applications, a bit storage on the base of the grip to reduce downtime, and an LED light to illuminate the work surface. The tool weighs just 2.9 pounds and has good ergonomics that help counter the inconvenience of having a cord. The 8-foot cord is longer than some, but an extension cable will usually still be needed. It is often necessary to cut holes for conduit or pipework when hanging drywall. While the task can be done with a knife, it takes a lot of effort and good control, or the result will be untidy. A clutch often works in conjunction with the nose cone, disengaging the drive when the screw reaches the desired depth. Weight and Ergonomics

Additional info

Makita DFR550Z LXT Li-Ion Cordless Auto feed Screwdriver 18v gives high operation efficiency delivered from fast rotational speed and improved screw strip management. Has Makita's new silent clutch featuringdirect drive transmission in reverse rotation. Also now with a more reliable casing attachment which can be removed or attached without a tool. The 424mm long machine has an ergonomically designedrubberizedgrip with anti-slip to provide a steady hold in all conditions. DFR550ZFeatures: