This durable ratchet is made from Chrome Moly Steel and features a quick-release button for easy s...This durable ratchet is made from Chrome Moly Steel and features a quick-release button for easy socket changes. It has a 3/8" drive and 72 teeth, providing 5 degrees of turn between clicks. The ratchet is 180mm in length with a head width of 32mm. It is highly mirror polished and includes a forward/reverse selector for versatile use. Precision manufactured for reliability.
This guide is for anyone using the US PRO 3/8 DR 72T QUICK RELEASE RATCHET - B4127. The ratchet offers efficient performance and ease of use, thanks to its quick-release mechanism and fine tooth count. However, users should be aware of its specific size and intended applications to avoid over-torquing.
All features
Model Part Number
B4127
Brand
us pro
Extended Product Information
FAQs
What type of steel is the ratchet made from?
The ratchet is made from Chrome Moly Steel.
What is the drive size of this ratchet?
The drive size is 3/8".
How many teeth does the ratchet have?
The ratchet has 72 teeth.
What is the benefit of the quick-release feature?
The quick-release feature allows for fast and easy socket changes.
How do I maintain the ratchet?
Clean the ratchet after each use, wipe it with a clean cloth, lubricate moving parts occasionally, and store it in a dry place.
What is the head width of the ratchet?
The head width is 32mm.
Where is this ratchet best suited?
This ratchet is best suited for automotive repair, mechanical work, and DIY projects.
Troubleshooting
Ratchet slips or doesn't grip.
Check if the ratchet teeth are worn or damaged. Replace if necessary. Ensure the correct socket size is used and that it's properly seated on the fastener.
Quick-release button malfunctions.
Clean the button mechanism to remove any debris. Apply a small amount of lubricant. If the problem persists, the quick-release mechanism may need replacement.
Difficult to switch direction.
Ensure the forward/reverse selector is fully engaged. Clean and lubricate the selector mechanism if it's stiff.
Pros and Cons
Pros
Durable Chrome Moly Steel construction
Quick-release button for fast socket changes
72-tooth mechanism for fine adjustments
Forward/reverse switch for ease of use
Mirror polished finish for corrosion resistance and easy cleaning
Cons
May not be suitable for extremely high-torque applications
The head width (32mm) may limit access in very confined spaces
Requires proper care to maintain performance and lifespan
Specific to 3/8" drive sockets only
Setup, Compatibility & Care
Setup: The ratchet is ready to use out of the box. Ensure the correct socket size is attached by pressing the quick-release button and inserting the socket. Select the desired direction (forward or reverse) using the selector switch.
Compatibility: This ratchet is compatible with standard 3/8" drive sockets and accessories.
Care:
Clean the ratchet after each use to remove dirt and debris.
Wipe the ratchet with a clean cloth.
Lubricate moving parts occasionally with a light oil to maintain smooth operation and prevent corrosion.