Number of included pieces: 24+1.
Explosion-proof: Yes.
Magnetic or not: yes.
Insulation: Yes.
Material: chrome vanadium alloy steel.
Rotary head type: Y-shaped, cross, Chinese character, plum blossom, hexagon and star.
Specification of cutter head: 4mm.
Weight: about 200 (g).
Scope of application: precision instruments.
Package Include: 1 Set