GPCA - GP 1945 Pen LITE, Smart Alternative to a Pen Light, EDC Pen Multitool with Multi-Tone Rescue Whistle and Glass Breaker, Survival Gear for Camping, Hiking and Self Defense, Aluminum - Jet Black

This thing ticks all the boxes for me. It's made of aluminium so it's durable and weighted just the way I like it and the bolt action is very satisfying. It has a very rugged tactical design which I love. The pen looks amazing and writes smoothly. It comes with an extra ink replacement with it and a velvet case. I don't think I'll ever need the whistle or the pointed end but it's nice to have.

I bought this pen to keep in my Jeep as a compliment to my Overland Tailor 3x5 Zip Flip cover with a Rite in the Rain notepad. The pen is solid, feels good in the hand and writes well. The built in whistle will come in handy for keeping in touch with, and calling, my dog when we are out exploring. Due to the knurled design of the pen I expect it will be easy to write with when gloves are on as well. Even the 1-inch measurement marks will be handy! Well made product, should last for many years.

Fit perfect in my wife's pen. She is very happy.

Tip is just slighty too wide to fit my pen and gets stuck...

This has to be the best deal for a great gift pen. Also I have found it to be an excellent daily use pen. In the short time I've had it I have... Used measurement notches to bring exact right size sockets to work the next day to tighten bolts on company van. Used the rough surfaces of measure notches to file down damaged fingernail plus also sharp edge on wheelchair that might have been dangerous. And used the whistle to get the attention of my kids from much longer range than I can whistle. Since very young we have special whistles for each like in Sound of Music. Lol! Plus the bolt action serves as a nice "safety lock" as you cannot clip the pen into your shirt pocket with ink out so no accidental shirt ink stains! Yay!