Ck precision trimmers ck tools t4845 18 zirconium oxide ceramic tipped with esd compliant thermoplastic handles swivel cap for precise control non magnetic 100 insulated 100 antistatic high resistance to wear contamination free for clean rooms low thermal conductivity high temperature resistant up to 1000oc 100 rustproof highly resistant to acid ck tools t4845 18 precision ceramic trimmer slotted 18mm