To oil the #4 Wahl Competition Series blade, place a few drops of Wahl oil on the front and side of the cutting blade. Then wipe off excess oil from the blade with a soft dry cloth. Aerosol lubricants contain insufficient oil for proper lubrication of the #4 Wahl Competition Series blade.
Wahl 4 Competition Series CLipper Blade. The #4 clipper blade cuts (8mm) with a chrome finish for rust protection. Compatible with Andis, Oster or Wahl clippers having a snap-on mechanism on the blade. Caution: Make sure you have chosen the right blade or scissors model, as no clipper blade or scissors is exchangeable or refundable.