2024 5pcs /set ER16A Nuts Collet Clamping Nut for ER CNC Milling Chuck Holder Lathe

1、Suitable for ER-type engraving machine spindle machine extension rod locking collet 2、These ER nuts are durable non-shedding simple and efficient 3、Precision ground and hardened 4、These ER16A nuts collet clamping nut are used for ER CNC milling chuck holder lathe 5、The surface adopted the process of oxidative blackening to isolate air and to prevent rust