Sigma Electric 1902 EMT 3/4-Inch One Hole Strap, 50-Pack Go to amazon.com Related posts Top 16 best conduit strap 2022 FeatureStamped SteelSupports EMT ConduitcULus Listed Description3/4" 1 Hole EMT Strap from Sigma Electric. Sigma has been a trusted manufacturer of metal conduit fittings and weatherproof products for over 25 years.