Genuine ECHO PB-760LN PB-770 Flexible Blower Tube Part # E164000090 FOR USE ON THE FOLLOWING MACHINES: · PB-760LNH S/N: P37812001001 - P37812999999-->Blower Tubes · PB-760LNH S/N: P39313001001 - P39313999999-->Blower Tubes · PB-760LNH S/N: P39511001001 - P39511999999-->Blower Tubes · PB-760LNT S/N: P37912001001 - P37912999999-->Blower Tubes · PB-760LNT S/N: P39413001001 - P39413999999-->Blower Tubes · PB-760LNT S/N: P39611001001 - P39611999999-->Blower Tubes · PB-770H S/N: P02912001001 - P02912999999-->Posi-Lock Blower Tubes · PB-770H S/N: P05211001001 - P05211999999-->Posi-Lock Blower Tubes · PB-770H S/N: P30613001001 - P30613999999-->Posi-Lock Blower Tubes · PB-770T S/N: P03012001001 - P03012999999-->Posi-Lock Blower Tubes · PB-770T S/N: P05311001001 - P05311999999-->Posi-Lock Blower Tubes · PB-770T S/N: P30713001001 - P30713999999-->Posi-Lock Blower Tubes PLEASE CHECK THE SERIAL NUMBER ON YOUR MACHINE! IT DOES MAKE A DIFFERENCE!!