ER20 ER-20 Spring Collet Set - 7 Pcs 1/8"-1/2" Spring Collets for CNC Engraving Milling Lathe Chuck Tool

FEATURE High precision ER20 collets are alternately slotted from both ends so they have a powerful grip on the shank Suitable for CNC milling lathe tool & workholding engraving machine Each collet with a separate protective container SPECIFICATION Model: ER20 Material: High grade 1065 carbon steel Run-Out Tolerance: 0.015MM(0.0006") Size: 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"

• Durable - The spring collets are made of high grade 1065 carbon steel for durability and long-term use
• High Precision - The surface of the collets is precision ground for a precise fit. Total runout is less than 0.0006"
• Range - 1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
• Easy To Distinguish - Each collet is separately packed in the protective container with label, and each collect is mark with size
• Widely Used - These ER20 spring collets are suitable for boring, milling, drilling, CNC, tapping, engraving, spindle machines, and other processing