Brief introductionEnd Mill Holder BT40-SLB16 Cnc Tool Holder , apply to the holder of a DIN1835-B with a solid surface of the cutting tool, high speed and high precision machining .Mechanical spindle and cutting tools and other accessories.High Precision BT shank Tool Holder ,balanced G6.3 or G2.5 For choose.BT Tool Holders for mechanical spindle and cutting tool and other accessory tool connection. Is a simple, popular spindle shank connection standard, mainly BT30 BT40 BT50... Etc.. Mold industry, and high-speed engraving machine, used more. SpecificationsHigh Precision BT SLB Whistle North End Mill Tool Holder  Certification:ISO9001/2000  Quick delivery, high qualityFeature1. side lock end mill holder2. Material:20CrMnTi3. Hardness:HRC56-604. 7:24 taper tolerance less than AT35. Carbon depth more than 0.8 Products advantages 1. Simple and convenient design, high precision 2. Special alloy steel, high efficiency 3. For the clamping of tool with sidelock