SOSS® 220SS Series Invisible Hinge, 180° Single Action Hinge, UL Fire Rated Hinge for Wood or Metal, 316 Stainless Steel Material, Bright or Satin Stainless Steel Finish | Kitchensource.com
Soss Cabinet Invisible Hidden Hinge Concealed Mortice Various Models Genuine | eBay
218H Invisible Hinge - SOSS Door Hardware
Satin Brass Soss Concealed Hinge, Wings measure 1/2" Wide x 2-3/8" L. for 3/4", SOSS #204 - Walmart.com
SOSS Invisible Hinge System | Model #100
SOSS Invisible Hinge System | Model #416 | Fire Resistant
Soss Concealed Hinges - ND MillWerk Salvage and Sales
SOSS Invisible Hinge System | Model #220PT4 | Stainless Steel