Thomas & Betts - Conduit Female Adapter: For Rigid, Polyvinylchloride, 3/4″ Trade Size - 54088042 - MSC Industrial Supply
Killark® ADUP-12 Conduit Adapter, 1/2 in Male, 3/4 in Female Conduit, For Use With Class I, Groups A, B, C, D Pin and Sleeve Device, Copper Free Aluminum, Silver | SMC
Cantex 3/4 in. Female Conduit Adapter R5140044 - The Home Depot