ประแจ

ER Spanner (Wrench) Features: ◎ Used to tighten and loosen ER collet-chuck nuts; ◎ Available in A-type, M-type and UM-type to match the corresponding ER nut; ◎ Covers ER8 to ER50 collet sizes; ◎ Forged tool steel with a durable, comfortable-grip handle for reliable torque.