"These were excellent as used for the sealing of oil pipes on classic motorcycles. The 8mm diameter corresponds exactly to 5/16" Imperial which is the general standard for rocker box lube connections. Almost impossible to find elsewhere."
"I have bought them to fix an leaking coolant plug on my motorcycle. I was a bit worry if the copper won't be soft enough to seal round the plug but did job perfectly. I know that buying a whole set just to do a wee job is a bit of an overkill but they will last forever and will save me money in a long run.
"This copper washer set represents great value for money when compared to the individual price other people are charging per washer. Not only that, they come in a good storage box. I only needed a few for my present need, but by paying a bit more I have a good stock that will save me wasting time in the future. The overall quality is good, but there are a couple that were not perfect, so I have harshly removed one star from the reliability score."
"a few of the washers are stepped so not much use for sealing anything properly. the box photo shows lots of compartments giving the appearance that there are lots of different sizes however they are doubled up. there are six sizes and the emphasis is on the smaller sizes. i have transferred to a smaller box and use this one for other things. i dont think i will use 400 m4 washers in my lifetime."