| 摘要 |
The present disclosure provides an improved system and method of using a speed driver with a shank that can be selectively locked to the handle. Such locking can occur without significant effort or even removing the driver from the fastener during operation. The shank is biased in a first position with the handle for independent rotation in the handle, and selectively engaged with the handle in a second position with the handle. Thus, a speed driver can still offer the relatively rapid rotation from cranking the handle about the shank, yet selectively provide high torque similar to a fixed handle/shank arrangement in a typical screwdriver or other driver.
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