Specifications: High quality stainless steel nut, solid plastic grinder handle & protective spring. Turn unwieldy electric grinding into deft manual grinding with this shaft. Use to extend electric tools for grinding the little work piece in some area. Widely used in drilling, engraving, milling, grinding works. Perfect to use with electric grinder, mini drill and sculpting mill. Item Name: Grinder Flexible Shaft Material: Stainless Steel + Rubber Slotted Nut Model: M18-M19 Flexible Shaft Length: 107cm/3.51ft Features: Extension, Rotary, Easy to Use, Durable Connecting Slotted Nut: 4 x 1.8cm/1.58" x 0.71" (Approx.) Screw Thread Pitch: 3mm/0.12" (Approx.) Transmission Shaft: 99cm x 2cm/38.98" x 0.79" (Approx.) Notes: Please straighten the shaft on using to extend the service time of this accessory. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Grinder Flexible Shafts 1 x 7 Wrenches 1 x Mini Wrenches