Adjustable Hole Cutter Hole Saw for Recessed Lights Ceiling Speakers Vent Holes Drywall Plywood (1-5/8" to 4-7/10")

User Instruction It requires a hand drill with a 3/8"(10mm) or larger chuck to cut holes from 1-5/8"(40mm) to 4-7/10""(120mm) in diameter and materials up to 3/4"(19mm) thick from one side, 1-1/8"(30mm) thick from two sides Caution * When cutting into walls, floors or ceilings, always check to ensure that no electric cables or water pipes etc are in the vicinity of the proposed cut * Always keep the cutting blades sharp * Do not use undue force, or too great a drill speed, suggested cutting speeds Hole Diameter(mm) Drill Speed(RPM) 40 - 49 --------------- 800 50 - 69 --------------- 600 70 - 89 --------------- 400 90 - 119 -------------- 200 120 -180 -------------- 100 * Ensure the cutting blade holders are tight before use * Make sure to measure the CUTOUT for the product (speaker, recessed light) you are installing. The size of the product you are installing uses a larger cutout, and the needed size is different by manufacturer of the canned light or the speaker * Screw the wing nut on to the threaded end of the spindle so that that assembly is secure * As with any new tool, always test on a scrap piece of material to get familiar with the tool

• Cutting hole diameter: 1-5/8" to 4-7/10"(40mm - 120mm)
• Package:1pc professional grade adjustable hole cutter with two replaceable pilot drill bits (#45 steel), 2 sets of replaceable cutting blades (high speed steel blades + tungsten carbide blades), 1pc ABS dust shield, 1pc adjustment hex wrench, 5pcs brad-point wood drill bits and 5pcs Masonry drill bits(4mm/5mm/6mm/8mm, 10mm), 1pc carpenter pencil, 1pc 3m tape measure
• Infinite adjustment and measure bar is marked in inches and metric system, Used for recessed lights and ceiling speakers installation hole cutting, skylights, vent holes cuttin
• Application materials: Sheetrock, Drywall, Plaster, Ceiling Tile, Soft Acoustic Tile, Plastics, Fiberglass, Acrylic Sheet, Soft Wood and Plywood