27 Pcs Industrial tools: 20 x Jigsaw Blade & 7 x ER11 Collet(1-7mm) Widely used in machining centers,general milling machines, CNC milling machine, engraving machine, T101AO 4inch T-shank Jigsaw Blades.Used for cutting wood or plastic. Made of high quality high carbon steel, high toughness and sturdy. Item Condition: It is ER11 precision spring collet. and wear-,Large holding force, wide clamping range. Gripping Range: 1mm to 7mm. high-speed machines, and other processing. Style: ER11 Gripping Range: 1mm,2mm,3mm,4mm,5mm,6mm,7mm Fits metric shank size(s): For example,1mm Collet Fits 1mm metric shank,2mm Collet Fits 2mm metric Shank: T-Shank Jigsaw Blade Size:Length: 83mm Colour: Silver + Black Material: High-carbon steel + 45 # steel Package Contents: 20 x Jigsaw Blade 7 x ER11 Collet(1-7mm) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.