

Product Details
LD-266 Cr-V Socket Wrench Set Blow Mold Case 40pcs
LD-266 Chrome Vanadium Socket Wrench Set 40pcs with 1/4, 3/8, and 1/2 inch drive sockets in red blow mold case. Metric sizes 4-32mm for automotive repair.
Core Features
- 40-piece set with 1/4, 3/8, and 1/2-inch drive sockets
- Chrome vanadium (Cr-V) steel forged and heat-treated
- 6-point socket design for maximum fastener contact
- 72-tooth quick-release ratchet with 5-degree swing arc
- Includes shallow, deep, and spark plug sockets
- Red HDPE blow-mold case with labeled compartments
Application Scenarios
- Automotive engine repair and maintenance
- Tire, wheel, and brake service
- Mechanical equipment assembly and disassembly
- Industrial machinery maintenance and repair
- Motorcycle and ATV repair
- General mechanical fastening and loosening
FAQ
What is the difference between 6-point and 12-point sockets?
6-point sockets provide maximum contact area with the fastener, gripping the flat sides of the hex head. This reduces the risk of rounding off fasteners, especially under high torque or on worn fasteners. 12-point sockets can engage at 30-degree intervals for better access in tight spaces but grip the corners of the fastener, increasing rounding risk. For automotive work, 6-point sockets are strongly recommended. The LD-266 set uses 6-point sockets for maximum durability.
Which drive size do I use for lug nuts?
Most automotive lug nuts require a 1/2-inch drive socket in 17mm, 19mm, 21mm, or 22mm size depending on the vehicle. The 1/2-inch drive provides the strength needed for the high torque (80-140 ft-lbs) required for lug nuts. Never use a 3/8-inch drive for lug nuts as it may break under the torque. Always use a torque wrench for final tightening to ensure proper and even lug nut torque.
What is the swing arc and why does it matter?
The swing arc is the minimum angle the ratchet must rotate to engage the next tooth and produce a turning action. A 72-tooth ratchet has a 5-degree swing arc, meaning you only need 5 degrees of rotation to turn the fastener. This is critical in tight spaces where you may only have a small range of motion. Lower-tooth ratchets (e.g., 36-tooth with 10-degree arc) require more swing room. The LD-266 set uses 72-tooth ratchets for maximum accessibility.
How do I maintain my socket set?
Keep sockets clean by wiping with a cloth after use. For oily or dirty sockets, clean with solvent and dry thoroughly. Apply a light coat of oil to prevent rust on chrome surfaces with damaged plating. Keep the ratchet mechanism lubricated with a few drops of light machine oil through the access hole. Do not disassemble the ratchet unless you have experience. Store all components in the case to prevent loss. Periodically inspect sockets for cracks or deformation and replace damaged pieces immediately.
