I put a video on my channel about the Marxman pens a while ago and have since used the pens a lot over the last year. This video was really to tell you what a time saver they actually are. In the past if I was to fix a piece of wood to a wall I would pre-drill the wood and hammer hardened nails though the holes while holding it against the wall. This would leave an impression (if I was lucky!) on the wall showing me where I should drill. It wasn't alway successful!
Since using the Marxian pens almost every "shot" marked enabling me to drill with confidence.
The pens seem to be available in most DIY stores and of course on Amazon. Shop about as there are a lot of varying prices but my last purchase was from Amazon as the price was very competitive. I've left a link below to my original video and to Amazon.
Original marking video • Deep hole markers for ...
Amazon page for these markers: amzn.to/48BRb6o
Link to Mike’s store front on Amazon where a lot of the tools and gear used in my video are shown: www.amazon.co.uk/shop/mikemak...