From the Manufacturer: Senco 790003N DS200-S4 Electric

• Pain-Free Productivity — DuraSpin collated screws make even the novice or apprentice user as fast as the most experienced bulk screw user. Plus, collated screws mean no more screw slivers underneath your fingernails, or painful finger cuts from bulk screws.
• Reduced Waste — Eliminate the waste experienced with bulk screws (can be 10% to 15% of total screws used).
• Patented SENCO DuraSpin feed system drives screws quickly and efficiently without jams or misfeeds.
• Ergonomic design — May be used with a one-handed or two-handed grip. Cushioned second hand grip provides added comfort and reduced exertion.
• Easy Depth-of-Drive Adjustment — Just turn the thumb screw to regulate the precise amount of countersink.
• Quick Release — Feed system snaps off to give easy bit access.
• Adjustable Nose Piece — Easily adjusts tool for screw sizes from 1" — 2" (25 mm — 50 mm).
• Super-Tough Drive Bits — Outlasts the competition.
• Optional extension is available, to comfortably drive ceiling screws from a standing position.
• SENCO's Full One Year Warranty.
• Modular design — Snaps together quickly and easily (with no tools).
• Optional Extension — Extends tool to 38" long — screw off drywall ceilings without stilts.
  

• RPM: 4000 rev/min
• Height: 9.25" (235 mm)
• Length: 10.5"(267 mm)
• Weight: 4.9 lb (2.2 kg)
• Fastener Capacity: 50 screws (per strip)
• Power Source: Electric