DURI Bi Metal Hole Saw Sets with Arbor and Pilot Bit Smooth Fast Cutting for Wood, Plywood, Plastic, Drywall, Thin Sheets, More Ideal Ceiling Light Installation DIY Projects

Premium Material Construction: Hole Saw Made of high-quality high-speed carbon steel & Bi-Metal, designed for increased durability and outstanding cutting performance, with higher hardness toughness cutting strength and stronger wear resistance Wide Application Range: Widely used in drywall, wood, cornhole, plywood, plasterboard, ceiling, thin metal, plastic, PVC plasterboard, furniture and common building materials, featuring sharp tooth shape and durability Complete Size Selection: Set of 9 sizes available including 20/25/32/50/60/70/75/80/100mm, 2mm thick, with effective cutting depth of 30mm for sizes below 50mm and 35mm for larger sizes Spring Loaded Mechanism: Drilling bit is fitted with ejector spring for easy core removal and push out chips, reducing the time and effort required for chip evacuation, reducing shock during drilling, and preventing damage to the insert and hole Efficient Chip Removal System: The dedicated hole for chip removal can effectively improve the speed of removing debris, reduces blockage, and ensures smooth and accurate drilling with automatic disc ejection after completing the hole Complete Set with Arbor and Pilot Bit: Includes arbor and pilot bit for immediate use, suitable for ceiling light installation, DIY projects, plumbing, electrical work, and various home improvement applications