Quick Take
Choosing workholding fixturing for a milling machine usually comes down to matching jaw width, opening capacity, and build stiffness to the parts you actually clamp. Prices vary widely, and the right pick depends on whether you need a single bench vise, a matched pair for long workpieces, or a dedicated jaw upgrade for a 6-inch CNC vise.
The four listings here span from $56.17 to $169.95. The 4-inch lock-down vise is the lowest-priced entry point, the 6-inch bench clamp vise offers a big cast-iron body, the two-piece 6-inch quick-clamp set gives you a matched pair, and the 6-inch serrated hard-jaw set from Mechforce is aimed at CNC users who already have a compatible vise.
Listed Price Comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| 4-inch Lock-Down Vise | USD 56.17 | |
| 6-inch Bench Clamp Vise | USD 91.10 | |
| 2-Piece 6-inch Quick Clamp Vise Set | USD 121.65 | |
| 6-inch Serrated Hard Jaw Set | USD 169.95 |
Match the Workholding to the Job
- Compact, precise work on a smaller scale: the 4-inch lock-down vise gives you a stationary base, 4-inch jaw width, and 19 kN clamping force at the lowest listed price.
- General-purpose 6-inch clamping: the 6-inch bench clamp vise pairs a 6-inch jaw width with a 5.9-inch opening and a heavy HT250 gray cast iron body.
- Long or extra-long workpieces: the two-piece 6-inch quick-clamp set provides two matching vises with 2 1/4-inch jaw heights so you can support the full length of the part.
- Upgrading an existing 6-inch CNC vise: the serrated hard-jaw set uses heat-treated tool steel and replaceable 0.100-inch teeth for high-grip workholding.
Product Notes
6'' Machine Vise Precision CNC Milling Machine Bench Clamp Vice Lock Vise
The 45# steel jaws and HT250 gray cast iron body give this 6-inch bench clamp vise a durable, rigid structure. Its listed gross weight of 59.4 lbs means it will stay planted during heavy milling or drilling passes. The 1-3/4-inch jaw height adds vertical support for standard workpieces, while the 5.9-inch jaw opening is wide enough for common stock. At $91.10, it's a mid-priced single-vise option. The main limitation is the 5.9-inch opening: anything wider won't fit without stepping up to a larger workholding setup.
4" Precision Vise Lockdown CNC Milling Machine Vise Clamping Vice Plier Milling
This 4-inch lock-down vise uses a stationary base, which keeps the setup simple and predictable on a bench or CNC table. Its cast iron body and 45# steel jaws are paired with a listed max clamping force of 19 kN. The 4-inch jaw width suits small to medium parts, and the price of $56.17 makes it the most accessible listing in this comparison. If your parts stay within that 4-inch envelope, this is an easy, low-cost way to add dependable clamping. The limitation is capacity: larger workpieces will require a bigger vise.
2 Pcs 6" Quick Clamp Milling Machine Vise 6" Jaw Width 2 1/4" Jaw Height
Two matched 6-inch quick-clamp vises give you a consistent clamping setup for long or wide parts. The alloy steel and cast iron construction, along with precision-ground jaws, points to a sturdy, ready-to-run pair. The 2 1/4-inch jaw height is taller than the single 6-inch bench vise's 1-3/4-inch jaw height, which helps when holding tall profiles. At $121.65, you're paying for two vises, so the cost is higher than the single offerings. The trade-off is bench space: two vises need twice the mounting area, but they also let you support the full length of an extra-long workpiece.
6" CNC Milling Vise Hard Jaws Steel Serrated Grip w/ Replaceable 0.100" Teeth
This is a dedicated jaw set, not a complete vise, so it pairs with an existing 6-inch vise. The heat-treated tool steel is hardened to HRC 55-58, and the step jaw shape offers additional positioning flexibility. The replaceable 0.100-inch teeth mean you can refresh the gripping surface without buying the whole jaw body. At $169.95, it's the highest price in the group, but it's also the only product here built specifically for upgrading a CNC vise's grip. Without a compatible 6-inch vise, you'd need to factor that into your total setup.
Final Recommendation
For a compact, low-cost workholding solution, the 4-inch lock-down vise at $56.17 is the straightforward choice. If you want a single general-purpose 6-inch bench vise, the 6-inch bench clamp vise at $91.10 gives you the heavy body and wide jaw most shops expect. When you regularly machine long stock, the two-piece 6-inch quick-clamp set at $121.65 earns its place on the bench. And for an existing 6-inch CNC vise, the serrated hard-jaw set at $169.95 is the targeted grip upgrade.
