Tech™ Beam 20″ Black Wiper Blade (19-200) by Trico®. 1 Piece. Blade Type: Beam. Installation Type: 9mm Hook, 9×4 Hook, 1/4″ Side Lock, Side Pin (22mm), Side Pin (17mm), Pinch Tab, Push Button (22mm), Push Button (19mm). Material: Steel. TRICO Tech® lets your customers step up from a conventional windshield wiper blade to premium beam blade technology at a reasonable price.