QV618BN 18pcs 3/4" Dr. socket set Black are constructed with chrome phosphate steel, a ductile material that adds additional elasticity to the socket and tends to bend or stretch rather than shatter.
This also helps to avoid unusual deformation or damage to the tool’s anvil.
QV618BM 18-Piece 3/4-Inch drive 6 point socket set is designed for quick engagement on both 6 point fasteners. The sockets feature super torque hexagonal opening for greater turning power without deforming the fastener and is suitable for use with pneumatic and electric impact wrenches.
They are specially heat treated for impact use to provide long life, safety, and durability. The drive end features pin retention with hole and groove. The sizes range from 22-50mm.
This difference is most noticeable in the corner of the socket where the wall is thinnest.
It is the first place where cracks would develop due to vibrations during use.
Regular hand tool sockets are usually made from chrome vanadium steel, which is structurally strong but generally more brittle, and therefore prone to breaking when exposed to shock and vibration.
Another noticeable difference is that impact About QV QV618BM 21-50mm x 3/4” Drive Black Impact Socket Set 18 Pieces, Imperial 6-Point Steel have a cross hole in the handle end, for use with a retaining pin and ring, or locking pin anvil.
This allows the socket to remain securely attached to the impact wrench anvil, even under high stress situations.

| Brand | Smoos |
| Size | 21PCS-CR-MO |
| Material | Steel |
| Number Of Pieces | 21 |
Consider this article as well
| Manufacturer | QV TOOLS |
|---|---|
| Part Number | QV618BM |
| Item Weight | 29.7 pounds |
| Package Dimensions | 540 x 180 x 80 mm |
| Size | 18PCS-CR-MO |
| Material | Steel |
| Item Package Quantity | 1 |
| Number Of Pieces | 21 |
| Head Style | Hex |
| Measurement System | Metric |
| Compatible Fastener Range | 0.75 inches |
| Batteries Included? | No |
| Batteries Required? | No |
Contact us for more information

https://youtu.be/7Wdb3MlJ4DE