Have bought the chain in order to have reserve when the original chain needs to be sharpened, the original chain (the Lamborghini electric saw) has now already done more than 15 hours of hard work, sharpen at 2x. Before the second sharpening I due to the good Rezesionen bought the Oregon chain and mounted. Has approximately one hour cut nice and fast, then a jolt when preparing, chain is broken. It had no serious demands, not very thick or hard woods, am also conscious of no error. The chain links were bent at the breaking point as soft sheet apart. For me now the question arises: Monday chain caught, individual production error or I must often reckon with something in this chain? All the more astonishing, because the original chain surely should be of Oregon, even if not identical to it. Saw again with the original chain on, but I thought about appropriate compensation must make. The second point gets the chain just because it has first well cut, and I go out times not general quality defects. But they failed with me anyway. Addendum: Have now found the alleged original chain Oregon 91VG057E. This has special connecting links, which prevent a setback. Has yes its worth and is also considerably cheaper.