Lock Technology 4400-40 7/8" Twist Socket
A 7/8 inch twist socket for turning transmission fluid drain and fill plugs
- Twist socket design speeds up fastener work
- 7/8 inch size fits specific transmission applications
- Lock Technology brand ensures professional-grade quality
- New condition guarantees reliable out-of-box performance
- Manufacturer direct shipping reduces handling time
7/8-Inch Twist Socket
The Lock Technology 4400-40 is a 7/8-inch twist socket built for automotive service tasks. It fits fasteners of that exact size and is sold as a new tool. The manufacturer listed the item in February 2025 under the Lock Technology brand.
Mechanics needing a single 7/8-inch socket
This socket suits technicians who only require one 7/8-inch drive tool for transmission or general repairs. Buyers needing a full socket set, multiple sizes or a ratchet included should look at broader kits instead.
7/8-inch drive size
The 7/8-inch opening is the sole specification that determines whether this socket matches the fastener you are working on. Verify that dimension against the component before purchase.
How it compares
Measured against everything we stock in Transmission Fluid & Gear Oil, at today’s prices. Recalculated every night.
- Price $26.99
- Cheaper than about 58% of the 118 comparable items (median $40.99).
Specifications
| Product | |
|---|---|
| Brand name | LOCK TECHNOLOGY |
Questions about this item
Will the 4400-40 7/8" twist socket fit the drain plug on my older transmission without rounding the corners?
The 7/8 inch opening matches fasteners of that size; verify the plug hex on your specific unit before use.
How can I confirm the 4400-40 twist socket is engaging the fastener correctly after positioning it?
The twist mechanism grips the flats when turned; smooth rotation without slipping shows proper engagement.
Does the 4400-40 package include an extension or ratchet, or must I supply my own drive tools?
Only the 7/8 inch twist socket is included; a compatible ratchet or breaker bar is purchased separately.
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