This high-quality flexible shaft can extend the function of electric grinder & drill to engrave, polish, milling. It can turn unwieldy electric grinding into deft manual grinding. Features: High quality: stainless steel nut, solid plastic grinder handle & protective spring. Turn unwieldy electric grinding into deft manual grinding with this shaft. Widely used in drilling, engraving, milling, grinding works. Perfect to use with 180W electric grinder. Note: Please straighten the shaft on using to extend the service time of this accessory. Specifications: Color: Black Shaft Length: 108cm Connecting Slotted Nut: 4 * 1.8cm / 1.58 * 0.71in (Length * Connecting Diameter) Screw Thread Pitch: 2MM / 0.078in Slotted Nut Model: M18-M19 Transmission Shaft: 99 * 3cm / 38.98 * 1.18in(L * W) Item Weight: 205g / 7.23oz Package Weight: 208g / 7.34oz Package List: 1 * Electric Grinder Shaft