C Hook Spanner Wrench Collet ChuckProduct Details1.【DESIGN】Unique body design with phosphating finish, excellent shape spanner for round ER chuck nut.2.【MATERIAL】Forged with high carbon steel, hardness up to 40-45 degrees, not easy to break and has long service life.3.【FITS SIZE】45-52mm (1.77-2 inch).4.【USAGE】Hook spanner is designed to drive spanner head screws, threaded rings and shafts. exactly reduces the risk shaft, nut and housing damage. Suitable for machine tools, automobile, mechanical equipment.5.【HANGING HOLE】Wrenches could be hang on the wall by the the hole at button, which also makes it portable and stored.
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