Offer valid until 8/31/10. Buy 4 Affinis HB/Monophase or Putty Single Packs, get 1 of the same free! To receive your free good, please send a copy of your Patterson invoice to Attn: Redemption Center, Promo # CF114, CF215, CF316 Coltene/Whaledent, Inc., 235 Ascot Parkway, Cuyahoga Falls, OH 44223 or fax to 330-916-7096 or email to [email protected]. Invoices must be received by 9/30/10.