Air Micro Die Grinder Pencil Professional Pneumatic Multifunctional 65,000RPM

Air pencil grinder kit PACKAGE INCLUDES: 1 x Micro Air Grinder 1 x 1/8'' Backup Chuck 1 x Air Hose 1 x Oil Pot(without oil) 2 x Hand Wrenches 10 x Stone Heads 1 x 1/4 FNPT connector High Performance Tungsten alloy core, 1/8 inch head, free speed up to 65000RPM, Air inlet 1/4 inch NPT Operation Instuctions How to change the grinder bit? Use one wrench to hold the pencil grinder, the other one to unscrew the cap. Then you can change the grinder bit.