All critical tool holder surfaces precision ground Made from alloy steel hardened to 54 - 56rc Gage length is 3.0 inches Body diameter of chuck i

Warning:Examine tools, toolholders, and pull studs regularly. Replace toolholders and pull studs with surface damage. RPMs higher than 7,000 MUST hav

Does your machine have a spindle with a max RPM over 7K?Ensure you Examine tools, toolholders, and pull studs regularly. Replace toolholders and pull

Total runout less than .0003 on these precise ER16 collets Made from Alloy spring steel and fully hardened All critical collet surfaces are precis

Total runout less than .0003 on these precise ER25 collets Made from Alloy spring steel and fully hardened All critical collet surfaces are precis

Total runout less than .0003 on these precise ER32 collets Made from Alloy spring steel and fully hardened All critical collet surfaces are precis

APU13 Wrench is made from high quality alloy steel Wrench features a rubber grip Works on our APU13 series drill chucks Lockhart Precision Part#

APU16 Wrench is made from high quality alloy steel Wrench features a rubber grip Works on our APU16 series drill chucks Lockhart Precision Part#

ER16 Collet Wrench is made from high quality alloy steel Thick material allows high torque without bending 4 point contact ensures no distortion o

ER25 Collet Wrench is made from high quality alloy steel Thick material allows high torque without bending 4 point contact ensures no distortion o

ER32 Collet Wrench is made from high quality alloy steel Thick material allows high torque without bending 4 point contact ensures no distortion o