Reply to Needle Question

Ok so i just got my first set of vinyl turntables after being at it for about a year and a half now, and i have a question about needles/carts sorry if its a stupid question. Whats the diffrence in a OM Needle and just a "regular" needle? \

[ame="http://www.amazon.com/ORTOFON-CONCORDE-NIGHT-CLUB-KIT/dp/B00164EUVE/ref=sr_1_3?ie=UTF8&qid=1326839809&sr=8-3"]Amazon.com: ORTOFON CONCORDE NIGHT CLUB 2 KIT: Musical Instruments@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41qONCJ2CqL.@@AMEPARAM@@41qONCJ2CqL[/ame]
vs
[ame="http://www.amazon.com/Ortofon-OM-Nightclub-Turntable-Cartridge/dp/B000T9K6AQ/ref=sr_1_8?ie=UTF8&qid=1326839809&sr=8-8"]Amazon.com: Ortofon OM Nightclub II Single Turntable Cartridge: Musical Instruments@@AMEPARAM@@http://ecx.images-amazon.com/images/I/419uJo36oxL.@@AMEPARAM@@419uJo36oxL[/ame]


thanks