#10-16 x 1-5/8 Phillips Flat Head Reamer with Wings, Zinc Plated [4,000] Phillips Flat Head #10-16 x 1-5/8" Self Drilling #3 Point Zinc Plated 4,000 pcs x Box | Aprox. Weight 36 Lbs Meets ASTM C 1513 for cold-formed steel framing connections Meets F.I.P.-1000.7 for torsional strength & drill speed