Great vacuum pump! Solid, heavy, draws 30hg vacuum in secnds. I have heard that the smaller CFM pumps are OK but they take a fair bit of time to do their job.When I saw this one and the fact that it was a twin vane pump I thought bu??er it it's only a few bob more so why not have a quicker more powerful one. Well...It's a beast!, heavy, very robust and surprisingly very quiet, it's like having a V8 instead of a 4 cylinder. So effortless in operation. I've already forgotten the extra few pennies that it cost and look forwards to many years of trouble free use. It will compliment me each time I use it. It's worth the extra to get a much improved machine to do the job so much better.Cheers all, hope this was helpful.Regards,Peter A.