Serrated Diamond Hole Saw with Pilot Drill Bit, 3-1/8" Diamond Tipped Hole Saw for Precise Drilling，for Porcelain, Tile, Ceramic, Granite, Stone,Glass 80mm — Open-Box, 25% Off

【Innovative Serrated Pilot Drill Design】3-1/8" serrated diamond hole saw bit with guiding bit,instant positioning&anti-slip,ebsures smooth chip removal,keep the cut free of debris for a cooler,faster drill 【Brazed Diamond Hole Saw Bit with guiding pilot drill bits】Engineered with premium diamond-encrusted serrated segments that bite deep and cut efficiently,The serrated design allows superior debris clearance, delivering faster, cooler cuts compared to traditional smooth-edge hole saws 【Guiding Drill Bit for Precison Drilling】diamond hole saw kit with guiding bit ensure accurate drilling，guaranteeing your final hole is drilled exactly where your marked,prevent slip and surface damage 【Wide Material & Wet/Dry Use Compatibility】 It works effectively on ceramic, porcelain, tile, granite, marble, natural stone, glass, and glazed brick.Both wet and dry drilling applications, creating smooth, clean holes 【Easy & Effective Instructions】 1.Drill with the pilot bit installed for a position mark 2.remove the pilot drill bit with the hex wrench 3. Continue drilling without the piloot bit 4.Drill in a wobbling motion for debris removal,increase drilling speed and effciency.

Serrated Diamond Hole-Saw Bits with Pilot Drill Bit Diamond Tipped Tile Hole Saws with Guiding Bit for Porcelain Tile Ceramic Pottery Granite Stone Glass Bottles

· GRIPS INSTANTLY: The serrated, diamond-coated edges bite into the material upon contact, eliminating all skidding and "walking" on tile, glass, granite, and polished stone.

· CUTS AGGRESSIVELY: It doesn't just indent—it actively excavates a clean, deep guide hole with incredible speed, thanks to the exposed diamond cutting on multiple edges.

· LASTS EXTREMELY LONG: The brazing process creates a permanent, wear-resistant bond between the diamond and the steel shaft, offering a far longer service life than cheap, coated or plated bits.

· Brazed Diamond Grit: Unlike electroplated coating that wears off quickly, our diamonds are permanently bonded using a high-temperature brazing alloy

Kit Includes:

· 1x3-1/8" Serrated Diamond Tipped Hole Saw

· 1x High-Hardness Pilot Drill Bits

· 1x High-Hardness Hex Wrench