【Bi-Metal Hole Saw】 Perfect for Installing locks, knobs in doors and cabinets or drilling larger diameter holes through desks,etc.Designed for drilling metal sheet, drywall, plastic pipe, wood, PVC, and fiberboard hole. 【Durable】Dual metal hole with M42 carbon steel and Bi-metal, sharp and durable, and the edge of the blade is not easy to fall off. 【Sharp】Optimized tooth to be larger sharper and more uniform penetrates metal with precision. 【Soomth】Vibarition is less, which enable more stable operation and make the hole faster and more smoother. 【Spring Loaded Design】The spring on the drill bit is nice that it automatically pushes the disc out of the saw immediately after completing the hole. 【Long Lasting】It has stable mechanical properties, high wear resistance, high impact resistance and rust-proof, ensuring a long life. M42 Carbon Steel M42 Bi-metal Teeth Spring Loaded Design Heat Treated Carbon Steel Specification: Material: M42 Bi-metal Shank diameter: 10mm Hole diameter size: 85mm Package includes: 1 x Hole Saw Note: 1. Sliced material must be fixed, can be moved to and opening into a 90 degree angle; 2. When positioning the drill drill, wait, start drilling with a slow drill rotary speed, or the centre bit may be shattered; 3. During operation, if abnormal discharge cut unsatisfactory, please stop working; 4. Please do not screw up and down too hard, so as not to screw slip, processing more than 10mm thickness, remove the spring. -Real tool, Design your life- Application Suitable: Stainless steel plate, Iron plate, Aluminum Alloy, Home wood, Galvanized pipe, Fire pipe, Plastic, Gypsum Board and etc.. Not Applicable: Concrete, Stone, Ceranic tile, Glass. Adapted Machines: Pistol Drill, Bench Drill, Vertical Drilling Machine etc. Warm Tips: Metal hole, remember to add coolant. Adjustable Circle Hole Cutter Saw Kit SDS Plus Shank Hole Saw Cutter Diamond Hole Saw Drill Bit Speed Bi-Metal Hole Saw Horizontal Crown Router Bit 13Pcs Impact Driver Kit Add to Cart Add to Cart Add to Cart Buying Options Add to Cart Buying Options Customer Reviews 3.9 out of 5 stars 654 4.3 out of 5 stars 1,041 4.0 out of 5 stars 32 4.2 out of 5 stars 79 4.0 out of 5 stars 123 5.0 out of 5 stars 5 Price $16.88$16.88 $14.99$14.99 $14.99$14.99 — no data $14.99$14.99 — no data Size 30-120 diameter; 30-200 diameter; 30-300 diameter 30mm,35mm,40mm,45mm,50mm,55mm,60mm,65mm diameter 6-80mm diameter 14-80mm diameter 8mm or 1/2" shank;1-3/4" width;1.65" radius 1pcs 32x163mm Handle; 5pcs 8*35mm Slotte; 3pcs 8x35mm Phillips; 2pcs 8x35mm External hex m5,m6; 1pcs 8x70mm Phillips; 1pcs 8x70mm Slotte. Main Function Opening holes in wood and plastic Opening hole operation of wall and brick structure Drilling holes in ceramic tile, marble, granite, concrete Cutting holes in steel, wood, metal, tiles, aluminum, boards Making samll custom crown moldings, bowls Instant impact force loosens rusted or frozen screws without damaging them Material Alloy Steel Carbide Steel Carbide Steel High Speed Steel Carbide Steel Chrome vanadium steel Sharp, Soomth, Durable ✓ ✓ ✓ ✓ ✓ ✓