Description Drillpro 2pcs ER11 1 4 1 8 Inch Spring Collet Set for CNC Milling Lathe ToolSpecification MaterialSpring steelSize1 8 3 175mm 1 4 6 35mmOverall Length18mmSuitable ForBoring milling drilling tapping engraving CNC spindle machines and other processing Features Product selection of materials high quality spring steel long lasting Clamping force wide clamping range high accuracy Wide range of applications for example boring milling drilling tapping engraving CNC and other processing How to use1 Insert the tip into the pressure cap gently turn the retainer until the pressure cap eccentric retainer portion recessed groove along the directionof the arrow evenly push hard retainer you can mount the internal pressure cap 2 The pressure cap with retainer mounted together on a spindle or chuck body the cylindrical tool shank after wiping loaded clamping hole use awrench to tighten the pressure cap even force until the date before the tool folder in prison use Note not in the tool and avoid tightening pressure cap installed to avoid damage to the retainer 3 ATC with a wrench loosen pressure cap out of the chuck and the tool remove the tool retainer direction of the arrow push hard to quit and thenneed to put on retainer to the other aperture Package Included 2 x ER11 Spring Collet More Details