When you need a 12-inch long round tool steel rod in an oversized diameter, the first fork in the road is alloy and size: D2 or A2, 1-1/4 inch or 3/4 inch. Both listings arrive new, in annealed condition, with a machined finish and the same oversized tolerance (+0.005 to +0.030 on diameter, +0.000 to +0.250 on length). The listed prices are $73.99 and $34.99, a $39.00 gap, so the choice often comes down to what you are making and the stock diameter your setup expects.
Quick Verdict
If your work calls for a thicker 1-1/4 in. D2 bar, the $73.99 listing is the one to budget for. If a 3/4 in. A2 round fits your project, the $34.99 listing gives you a lower listed price and the same annealed, oversized, machined finish.
| Product | Listed Price | Price Bar | Key Specs |
|---|---|---|---|
| D2 Tool Steel 1-1/4" Round, 12" long | USD 73.99 | 1-1/4 in. diameter, D2 tool steel, annealed, oversized | |
| A2 Tool Steel 3/4" Round, 12" long | USD 34.99 | 3/4 in. diameter, A2 tool steel, annealed, oversized |
Where Each Product Wins
- The D2 rod wins when you need more cross-section. It is the listing with the 1-1/4 in. diameter, and its listed price is $73.99.
- The A2 rod wins when you want to spend less and need a slimmer round. It is listed at $34.99, the lower of the two price tags.
The price bars above give a quick visual of the listed-price spread: one listing fills the bar while the other sits closer to the middle. That mirrors the $39.00 difference between the two price tags.
Product Notes
D2 Tool Steel 1-1/4" Round, 12" long rod bar, D-2, Oversized
Choose this if you want the larger 1-1/4 in. diameter in an annealed, oversized D2 rod. The description specifies a machined finish and diameter tolerance +0.005 to +0.030, so you are looking at a round bar with a machined finish. Its listed price is $73.99, the higher of the two, which makes sense when your project needs the extra cross-section. The limitation is the price: it costs more than the 3/4 in. option, so it is best reserved for jobs that really need the thicker bar. This listing is for one 12-inch length, so match that against your workpiece before ordering.
A2 Tool Steel 3/4" Round, 12" long rod bar, A-2, Oversized
If the diameter you need is 3/4 in., this A2 rod has the lower listed price at $34.99 and still carries the same annealed, oversized, machined-finish specs in the description. It is a straightforward way to add A2 tool steel round stock to a smaller-diameter project. The limitation is the slimmer cross-section; it will not replace the 1-1/4 in. bar when you need more material. Also be aware the title says 3/4 in., so check that against your actual tooling before ordering. The lower listed price makes it the lower-priced pick between the two, but only if the size fits.
Final Choice by Use Case
Choose the D2 1-1/4 in. rod when the job demands a bigger diameter and you are comfortable with the $73.99 listed price. Choose the A2 3/4 in. rod when a lower listed price and a slimmer round match your project. If you are still deciding, focus on the diameter first: do you need 1-1/4 in. of stock or 3/4 in.? Then let the listed price settle the order. Both are 12-inch annealed, oversized, machined tool steel bars; the deciding factor is the diameter you need and how much you want to spend.
