My Taranis Knobs

I've been working on several variations of stick end replacements for the Taranis TX. At this point this is probably my final design. It's about 15mm in diameter at the top area and elongated at the bottom. Since I am a pincher the overall knob design fits with how I hold the sticks.
There are 3 different lengths ranging from about 20mm to 30mm.
Since I use 2 different lengths I can fine tune my control with the various length of each.
The design includes a 3mm hole which is about 15mm deep t