SPECIAL EDITION new from old stock tubes 6 pcs. That is nixie tubes IN-1 with flexible cooper pins (wires), which can be solder to PCB and dont need sockets, has nice vintage looks, and warm neon glow. 

Tube displays digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 
Indicating current (no more than): 2.5mA; 
Keep-up voltage (no more than): 150V; 
Firing voltage (no more than): 200V; 
Length of the tube (without pins): 60mm; 
Diameter of the tube: 30mm; 
Symbol size: 0.74"x0.4" (18 x 10 mm).