Durable two bearing 16pcs pencil die grinder kit 184009

pencil die grinder kit description:
Free Speed   54,000rpm
Collet Size:1/8"/3mm
Vent-pipe:3/8"
Air lnlet Size :1/4"
Air Consumption:2cfm  57l/m
Work Pressure:90psi

pencil die grinder kit features:
1pc  Micro Air Grinder
1pc   Oil Pot
1pc  Mini Oiler
2pc  Hand Wrenches
1pc  Nipple
10pc  Mounted Grinding Stones
two bearings