This is a set of four bolts which mount into the L-series engine's transmission bellhousing bolt holes. Two washers are included for both sides. These bolts and washers are zinc plated.
These bolts are 100mm long which will fit most engine stands with plenty of threads into the transmission bellhousing bolt holes on the engine block. The reason for the long length is that the arms of most engine stands are 60-80mm and the bolt must go through that.
These bolts are a metric class 10.9 bolt which is roughly equivalent to the US grade 8 bolt -- not to be confused with metric class 8.8 bolts which can commonly be found in US hardware stores and are more similar to a US grade 5 bolt. Class 10.9 bolts are recommended for a heavy duty application such as engine stand mounting.