Features 1、Pneumatic tapping machine chucks can be applied to tapping machines, drilling machines, milling machines, boring machines, pneumatic tools and other equipment with reversible spindles. 2、Our chuck is designed with a quite simple structure, which makes it easy to take or install. 3、With good lamping strength and accuracy, our product will have long service life. 4、Pneumatic tapping machine chuck is designed with quick and safe replacement, whcih can connect drill chuck post. 5、Our tapping chuck of torsion type can prevent the tap from breaking, making it durable. Specification Item Type: Pneumatic Tapping Machine Chucks Chuck Interface 19 Screw tap size form (note: D1 is for the Rod size,D2 is for the Square size) TAPS MODEL(Metric screw tap) ISO Standard screw tap D1×D2 JIS standard taps D1×D2 TAPS MODEL(INCH) INCH Screw tap D1×D2 Pipe thread Pipe Thread Taps D1×D2 DIN376 DIN371 DIN352 M2 2.8×2.25 3.0×2.5 2.5x2.1 2.8x2.1 M3 3.15×2.5 4.0×3.2 44204 4.0×3.15 3.5x2.7 3.5x2.7 3.5x2.7 M4 4.0×3.15 5.0×4.0 5/32 5.0×4.0 4.5x3.4 4.5x3.4 4.5x3.4 M5 5.0×4.0 5.5×4.5 44271 5.5×4.5 6.0x4.3 6.0x4.3 6.0x4.9 M6 6.3×5.0 6.0×4.5 44200 6.0×4.5 6.0x4.9 6.0x4.9 6.0x4.9 M8 6.3×5.0 6.2×5.0 44332 6.2×4.5 8.0x6.2 8.0x6.2 6.0x4.9 M10 8.0×6.3 7.0×5.5 44263 7.0×5.5 PT1/8 8.0x6.3 10.0x8.0 10.0x8.0 7.0x5.5 M12 9.0×7.1 8.5×6.5 44198 9.0×7.1 9.0x7.0 9.0x7.0 9.0x7.0 M14 11.2×9.0 10.5×8.5 44455 11.2×9.0 PT1/4 11.2x9.0 11.0x9.0 11.0x9.0 M16 12.5×10.0 12.5×10.0 44324 12.5×10.0 12.0x9.0 12.0x9.0 M18 14.0×11.2 14.0×11.0 44259 14.0×11.2 PT3/8 14.0x11.0 14.0x11.0 14.0x11.0 M20 14.0×11.2 15.0×12.0 16.0x12.0 16.0x12.0 M22 16.0×12.5 17.0×13.0 44385 16.0×12.5 18.0x14.5 18.0x14.5 M24 18.0×14.0 19.0×15.0 PT1/2 18.0x14.0 18.0x14.5 18.0x14.5 M27 20.0×16.0 20.0×15 20.0x16.0 M30 20.0×16.0 23.0×17.0 1/8inPT 8.0×6.3 PT3/4 23.0x17.0 22.0x18.0 M33 22.4×18.0 25.0×19.0 1/4inPT 11.2×9.0 M36 25.0×20.0 28.0×21.0 3/8inPT 14.0×11.0 M39 28.0×22.4 30.0×23.0 1/2inPT 18.0×14.0 M42 28.0×22.4 32.0×26.0 M45 31.5×25.0 35.0×26.0 PT1’3/8 35.0x26.0 M48 31.5×25.0 38.0×29.0 PT1’1/2 38.0x29.0 M52-56 35.5×28.0 PT1’ 26.0x21.0 PT1’1/4 28.0x21.0 Package List 1 x Pneumatic Tapping Machine Chuck