I bought a set of blades for my Viper last friday. They told me all Lesco 60's are the same as I wanted to make sure the viper and Z-two weren't different. Sure enogh I put them on and the hit each other. So I took em bak and told em to order some, the guy said we might be able to order some. Im like wtf!!!!!!!!!!. So here it is a week later they still have my $47.00 and I have No Gators for my Viper. The Viper is not that old of a machine, they stopped making it what 3 years ago, now they can't get blades for it !!!!!!!!