You should see APM's packaging.... I think you could strap some C4 to the side and detonate and it would still survive!
I ordered a Tak metal focuser wheel from them. It - just an aluminium wheel - arrived inside 2 separate baggies that were enshrouded by a foam pad on 2 sides which was wrapped in bubble wrap and taped, which was then surrounded by a 1/2 cubic metre of foam peanuts, which all fit in a box the size of which could fit a well packed 130mm refractor objective (probably DID at one point!). All this covered in the usual VORSICHT! Glas! red tape...
I mean, I don't think they were gonna get damaged
