Vanco's Category 3 Voice Grade 90 Degree Keystone Inserts feature an Innovative Pyramid Shaped Punch-Down Block for Easy Conductor Insertion. All 90 Degree, 110 Style IDC Punch Down inserts are Compatible with Leviton, ICC, Allen Tel and Many Others. They Accept 23-24 AWG Solid Cable and T568A or T568B Universal Wiring. Constructed of High Quality 50 Microns Gold Plating. Meet EIA/TIA 568B.2 standards and are UL Listed