A sliding T bar is a plain bar through a sliding head: pull it to one end for maximum leverage, centre it to spin a fastener with both hands. This is the complete list of 5 in the range, by drive size.
Two tools in one bar
Slid fully to one side, the bar is a long lever with the socket at the end — effectively a breaker bar, with all the force applied on one side of the drive. Centred, it becomes a T handle you turn with both hands, which applies torque symmetrically with no side load on the fastener at all. That second mode is the one people forget, and it is the right one for starting a stud, running a nut down a long thread, or any fastener where a sideways nudge would damage a thread or a mating face.
Why no ratchet mechanism is the point
A ratchet head contains pawls, a gear and a spring in a small housing, and that assembly is the weakest part of the tool. A sliding T bar has none of it — the load path is solid steel from your hands to the square drive. It will take abuse that would strip a ratchet, it can be leaned on without concern, and there is nothing inside to fill with grit. The cost is that you must reposition it by hand every stroke, which is why it is the tool for the tight fastener rather than the tool for the whole job.
All 5 sliding T bars
| Drive size | Retention | Teng part number | EAN |
|---|---|---|---|
| 1/4 in | Standard | M140050-C | 5020385134973 |
| 3/8 in | Standard | M380050-C | 5020385134966 |
| 1/2 in | Standard | M120050-C | 5020385134959 |
| 3/4 in | Safety lock | M340050S-C | 5020385138957 |
| 3/4 in | Standard | M340050-C | 5020385138889 |
Where this list comes from
Every row is read from the live Teng Tools USA catalogue on the day this page was generated — product record, part number and size taken from the record itself, never transcribed from a printed catalogue or inferred from a pattern. Drive size is resolved from the product record and cross-checked against the part number series. A size that has been discontinued disappears from this list rather than lingering as a part number you cannot order, which is the failure mode of every static spec sheet.
Choosing a drive size
Match the bar to the sockets you intend to turn rather than to the fastener. A larger drive through a step-down adaptor puts more torque into a small socket than it was built to take, and the socket, not the bar, is what fails. On the larger drives a safety-lock retention system matters: at those torques a socket parting company with the bar overhead is a genuine hazard, and the detent that holds it is worth having.
Bars and sockets are in sockets and accessories; ratchets are in ratchets.