Bizopen Diamond Bur Long Needle 858-008 Fine Grit

The Bizopen Diamond Bur Long Needle 858-008 Fine Grit is a precision thin-tipped diamond instrument engineered for veneer preparation, inter-proximal enamel stripping, and narrow access margin finishing where extreme tip precision is the primary clinical requirement. The 0.8 mm maximum body diameter tapering to a 0.2 mm pointed tip over a 5.0 mm working length gives the long needle bur the most precise access geometry in the Bizopen diamond bur range — allowing the practitioner to place margin preparation lines in locations that no wider instrument can access without sacrificing adjacent tooth structure. Bizopen’s fine 220 grit diamond coating is applied uniformly from the 0.2 mm tip to the full 0.8 mm body diameter, maintaining cutting capability at every point of the long working surface for fine margin preparation at any depth within the needle’s reach. The long working length makes the needle bur particularly effective for interproximal veneer preparation margin extension behind the contact point — a preparation area that standard short-working-length flame or round burs cannot reach without contact separation. The fine grit specification produces the smooth enamel surface and precise margin line that veneer preparations require for accurate impression reproduction and restoration fit. The long needle is indicated as a finishing instrument following initial preparation with standard grit instruments, not as a primary reduction instrument. FG shank, 22 mm total length for extended access. ISO 806 314 298 524 008. Tip diameter: 0.2 mm. Maximum body diameter: 0.8 mm. Working length: 5.0 mm.