As it's a range of 3 why not valiant, Vulcan and Victor. As a salute to a 3 fantastic pieces of British engineering the V bombers
Indeed. Here's me cleaning the bird cr@p off XH558's parachute nacelle after Waddington
http://www.jubileegroup.co.uk/JOS/misc/vulcan/DSC01788.jpg
Oh - and back on topic, the knife reminds me a little bit of a domino.
How about
'Domino' or '5-1'
Or something along those lines?
Come to think of it, 5.1 might be skating on thin ice a little bit what with American corporations being so fussy about branding and stuff.