Need a replacement key for your tractor? This 2-pack of ignition keys from XYZIL has you covered! The part number 231713 works with a ton of tractor models from Allis Chalmers (D10, D12, D14, D15, D17, D19, D21, H3, HD3), Case industrial models, International/Farmall, Oliver, White, and more. Important note: these are for tractors with Delco ignition switches specifically. The package includes two keys, so you'll have a spare when you need it. These are aftermarket replacements, not original equipment, but they're made to work perfectly with your tractor. Before ordering, double-check your current key or switch to make sure this is the right part - don't just go by tractor model and year since that can sometimes be misleading. The keys are well-made and should function exactly like your originals. XYZIL stands behind their products with a one-year warranty - if you have any quality issues, they'll replace them or refund your money. Compatible part numbers include Allis Chalmers 231713, 70321713, 72162639; Case A20346; Cockshutt MAO836; and White Oliver 105678A, 611105A, among others. Whether you've lost your key, need spares, or your original is worn out, this affordable 2-pack solution will get your tractor running again. The keys arrive ready to use - no programming or special tools needed. Just insert and turn! Keep one on your keychain and store the other somewhere safe for peace of mind.