C-Type Hook Wrench Set 4-Piece, Carbon Steel Spanners for ER40 ER32 APU16 38-42mm Collet Nuts with Non-Slip Rubber Handles

A 4-piece hook wrench set covering the most common ER collet sizes for CNC machining, with thickened carbon steel hooks and non-slip rubber handles built for daily shop use. Highlights Four Common Sizes: Set covers 38-42mm, APU16, ER32, ER40 collet sizes Thickened Carbon Steel: Thickened carbon steel hook resists deformation under torque Non-Slip Rubber Handle: Soft rubber grip stays secure and reduces hand fatigue Clear Size Marking: Laser-etched size marks for instant identification Storage Pouch Included: Blue canvas pouch for organized carry and storage Details Complete 4-piece set: 38-42mm, APU16, ER32, and ER40 covers most CNC collet applications Thickened carbon steel hook delivers solid strength and resists deformation under torque Soft rubber-coated handle gives a secure, comfortable grip that reduces hand fatigue Laser-etched size marks on every wrench let you grab the right tool at a glance Comes with a blue canvas pouch for neat storage and easy carry between jobs Where to use Designed for installing and removing collet nuts on CNC machining centers, mill-turn machines, and engraving routers. A practical addition to any machine shop, maintenance crew, or serious hobbyist\'s tool kit. Care Always match the wrench to the collet size before applying force. Store in a dry place; apply a light coat of rust-preventive oil on the hooks for long-term storage. Keep rubber handles away from organic solvents such as alcohol and degreasers.