Check the listing for details. 4pcs Drill Press Spring Quill Feed Return Coil Spring Blackening 35x6x0.7mm. Condition: New. Listed at 15.89 USD. Specification:Material : Spring Steel (60Si2Mn)Finish : Chemical BlackeningMaterial Thickness : 0.7mmMaterial Width : 6mmSpring OD : 35mmExpand Length : 680mm/26.8inchInner Mounting Type : HookOuter Mounting Type : Hook Package Content :4 x Drill Press SpringDescription:The drill press quill return spring is good replacement for many existing quill spring drill presses, this is the chrome housed spring that returns the quill to the top after you have completed drilling.Used to all kinds of vacuum cleaner coil spring, volume tube coil spring, safe coil spring and so on.Chemical Blackening, the performance of the product form oxide film, isolate the air, prevent rust.Pay attention to safe when installing springs.