扳手，開口扳手 55-62 mm，ER-40

Fits my ER-40 collet nuts perfectly with no slipping, and the 55-62 mm range handles everything I’ve thrown at it. Solid machining quality that makes collet changes quick and hassle-free.

Finally, a spanner that actually grips the ER-40 collet nut without slipping. The 55-62 mm range is just right for my bench top setup, and the fit feels solid every time.

After struggling with cheaper wrenches that slipped, this one grips the collet nut firmly across the full 55-62 mm range. The spanner style gives great leverage for bench work. Exactly what I needed for my ER-40 setup.