8mm Extra Long Sintered Straight Shank Diamond Drill Bit, 1pc – 110mm Depth 10mm Shank for Jade Glass & Stone

The HANS 8mm Extra Long Sintered Diamond Straight Shank Drill Bit is engineered for deep core drilling and precision hole making in hard, brittle lapidary materials such as jade, glass, crystal, agate, quartz, and stone. Featuring an extended 110mm working depth and a full sintered metal-bonded diamond crown, it delivers consistent abrasive performance and extended service life.

Specifications:

• Product Type: Diamond Drill Bit
• Outer Diameter: 8 mm
• Effective Drilling Depth: 110 mm
• Shank Diameter: 10 mm Straight Shank
• Bond Type: Sintered Diamond (Continuous multi-layer metal bond)
• Quantity: 1 Piece
• Recommended Materials: Jade, jadeite, glass, crystal, agate, quartz, ceramic, and hard gemstones

Operating Guidelines:

• Begin drilling at an approximate 45-degree angle to establish an initial crescent guide groove, then gradually upright the drill to 90 degrees for perpendicular drilling.
• Continuous water cooling is strictly required throughout operation to prevent thermal damage and flush slurry.
• Apply light, steady feed pressure and use periodic retract motions to clear cuttings from deep holes.