Lag & Hanger Bolts IronRidge QRail 20mm SS T-Bolt w/Nut Mill, QMR-TB20P-A-300 Mfr. Part # QMR-TB20P-A-300 Size 20 mm
Hardware EJOT Fastening Systems Precision Drill Bit HSS-5.5x175, 9250408000 Mfr. Part # 9250408000 Diameter 5.5 mm