Spark Plugs - What did they send me?

[jnickell41]

I ordered eight AC Delco R44TS plugs from Rockauto. Due to inventory levels they sent me two from one warehouse and six from another. Upon closer inspection it appears these are two different plugs, I'm trying to identify what I have, if they all would fit, or which ones I should send back.

Six boxes are labeled "BR44TS" other two boxes are labeld "R44TS". All eight spark plugs are labeled "R44TS". The plug on the right in the picture is from the "BR44TS" box. Pretty clear there are some physical differences between the plugs. Would both types fit my stock 350 TBI? Or should I send one set back?

Thanks