CZTD99M, for 18 piece set. Metric 2.5mm x 0.45 2.05 to 12.0mm x 1.75 10.20mm taps. I.S.O. 529 1975. Holds Metric sizes: 2.5 x 0.45 tap 2.05mm drill, 3.0 x 0.50 tap 2.50mm drill, 3.5 x 0.60 tap 2.90mm drill, 4.0 x 0.70 tap 3.30mm drill, 5.0 x 0.80 tap 4.20mm drill, 6.0 x 1.00 tap 5.00mm drill, 8.00 x 1.25 tap 6.70mm drill, 10.0 x 1.50 tap 8.50mm drill, 12.0 x 1.75 tap 10.20mm drill. All-steel reamer cases. Each storage hole precisely sized for accurate, quick tool selection. Raised embossed lettering for permanent identification. Corrosion resistant, epoxy baked on coating. Secure, snap-lock steel cover. Rugged, heavy gauge all–steel case.