I'm retrofitting front parking sensors on me Skoda Octy II. CAn anyone please guide me where I can get a 18mm drill head ... tbh I'm not even sure what it is exactly called !!

I know that i need to make an 18mm hole ..but what do I need to make the hole ??

Really hoping for some help here !!

This is the type of tool I used some years ago when fitting reversing sensors to an Octavia I. I will be using it again for my new Octavia.

http://jbtoolshop.co.uk/drill-cutting-bits/step-drill-cone-cutter-hss-titanium-coated-4-22mm

That stepper bit might be good to get the right size. You can buy 18mm hole saws but I find they are often a 1mm or 2mm out. You could buy one from a normal DIY store, though might have to buy an arbor separately for it. If thats the case could just buy a set.

http://www.ebay.co.uk/itm/METAL-HOLESAW-KIT-18mm-20mm-25mm-32mm-40mm-51mm-ARBOR-/220801348765?pt=UK_Home_Garden_PowerTools_SM&hash=item3368c9349d

Have you already got the sensors? The correct size hole saw was supplied with the kit I got!

When I bought my front set it also came with the correct sized hole drill

Ya you get the drill with the after-market sensors.

I'm going for OEM sensors with the full kit. (speaker, button etc).. so won't be getting a hole saw ( if thats what it's called) with it.

@DGW I have got a power drill ... the step drill won't work with that ..I guess OR will it ?? sorry I'm not that familiar with tools !

I hope those guys from the bay sell the hole saw separately ... because I really won't have any use for the full kit once I'm done with the sensors !

Edited 3 December, 201114 yr by pz1811

I used a variable speed power drill and had no problms drilling the right size holes and in the right locations. The OEM parking sensor kits I bought for my Octavia I and Fabia vRS both came without hole cutters. I don't think the Cobra kit I am about to buy for my Octavia II comes with one either.