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3.250 (3-1/4 inch) x 2.75 inches, 4140 Alloy Steel Round Rod, Hot Rolled, Bar St | eBay
4140 Hot Rolled Heat Treated Round Bar | Midwest Steel & Aluminum
4140 Alloy Round Bar, Annealed
Tool Round Bar 4140 | 18mm Steel Bar | 28mm Steel Bar | 4140 Steel Bar | Steel Tool - Tool - Aliexpress
4130 Steel rod, 4140 steel rod Hot Rolled Alloy Steel Round Bar
Hot Rolled AISI 4140 4130 Low Carbon Alloy Steel Solid Round Rod Steel Bars with Competitive Price - China Round Steel Bar, AISI 4140 Steel Bar | Made-in-China.com
4140 Steel Rod / Bar PH 3/4" X 8" Long 8 Pcs | eBay
Amazon.com: 4140 Steel Round Bar Stock - 1-5/8"Diameter x 12" Length : Industrial & Scientific