Ratchet Screwdrivers, Spiral Ratchet Screwdrivers, Adaptor for Spiral Ratchet Screwdrivers
A ratchet screwdriver has a mechanism that permits the tool to apply turning force only in one direction, while moving freely in the opposite. So it can be set to drive or remove screws, without having to move the bit in and out of the screw head at the end of each turn. This makes driving or removing screws and other threaded fasteners quicker and more comfortable.
A spiral ratchet screwdriver (Yankee Screwdriver, drill screwdriver) works in a similar way, but the turning force is provided by pushing the handle down over a spring-loaded spiral shaft. After each stroke, one lets the spring push the handle back off the shaft and then it is ready to be pushed back down the spiral, easily and quickly turning screws and other threaded fasteners in or out.
SCHRÖDER Spiral Ratchet Screwdriver
chromium plated, with wooden handle, (usually black) made by SCHRÖDER/Wuppertal, with 6.35 (1/4 in.) hexagon collet chuck for bits and reversible double ended bits for professional use.
Important Advice: Unlike many similar tools which have a 1/4-inch square drive, with this tool, after a bit is placed in the driver, the chuck must be tightened by hand. This puts pressure on a hard rubber ring that holds the bit in place. If this ring is lost or slips out of place, the bit will not be held firmly in place.
SCHRÖDER Spiral Ratchet Screwdriver short
Total length: 335 mm
SCHRÖDER Spiral Ratchet Screwdriver long
Total length: 480 mm
What a customer said about this spiral ratchet:
I did want to thank you for a GREAT tool. As you said it is a pleasure to use.
What amazes me is there is no eccentricity to the ratcheting mechanism. With
the S......, I sometimes feel a pull of the device off center as one pushes
down on the handle. It is only slight though. But the mechanism on the
German made Schroeder is superb. And it is POWERFUL! I was putting up a
pegboard rack and had to drive 4" long drywall screws. I started using a
manual screwdriver and after driving in two screws and being exhausted, I
realized I could use the Schroeder. Three pumps and the screws are in!
Better than using an electric screwdriver! And I could very easily tighten
the screws with the Schroeder by locking the ratcheting mechanism. Manual
hand tools are amazing.
Dan S., Newport Beach, California, USA
Adaptor for Spiral Ratchet Screwdriver
You own a ratchet with traditional chuck and want to use 1/4 in. bits? No problem with these adaptors.
|5.5 mm = 7/32 inch
|7 mm = 9/32 inch
|8 mm = 5/16 inch
With this incredibly small precision Bit ratchet you work fast in even confined spaces. Total length only 87 mm (less 3-1/2 inch)!
Details of the WERA Bit-Ratchet:
• Small return angle of only 6° for accurate work
• Fine-tooth ratchet mechanism
• Compact tool design for low working hights thanks to integrated bit holder in ratchet head
• Wera-Adapter 870/1 for 1/4 inch sockets
• Fast turning with your thumb using the wheel on the ratchet head
• Quick direction changes with forward and reverse switch
With 1/4 inch hex chuck for all standard bits
Adapter 870/1 for 1/4 inch sockets included
Bit shown in picture not included!