... clock size could be 12'',14.5'',16''. 2. single/full color plasma tube can be chosen 3. OEM is welcomed ... clock size could be 12'',14.5'',16''. 2. single/full color plasma tube can be chosen3. OEM is welcomed4. UL ... molded bubble, 4pcs/master ctnProductivity: 15,000pcs/month neon clock,full color plasma tube inside, HOT!!!