RYOBI 20 in. Replacement Blade is the best solution for replacing your 40V HP 20 in. Brushless Mower's damaged or dull blade. This blade is optimized to provide improved cutting efficiency and increased runtime for your cordless mower. Buy with confidence knowing that this OEM part will work with your RYOBI 40V HP 20 in. Brushless Mower. Replacement part for: RY401170VNM, RY401017BTLVNM, RY401180VNM, and RY401018BTLVNM.. 20 in. blade for RYOBI 40V HP brushless mower. Replacement part for: RY401170VNM, RY401017BTLVNM, RY401180VNM, RY401018BTLVNM. Hardened steel durability. Optimized for cordless efficiency. OEM part. Blade Length (in.): 20 in. Used with Equipment Type: Walk Behind Mower. Used with Equipment Type: Push Mower. Fits Models: RY401018BTLVNM. Fits Models: RY401180VNM. Fits Models: RY401017BTLVNM