Package Content:
1 x 90mm/3.5" Hole Saw
3 x center bits
1 x Allen wrench

Features:
1.Durable construction: Made from high-quality HSS carbon steel and bimetal, this hole saw offers excellent hardness and rust resistance.
2.Wide range of uses: This bi-metal hole saw cuts through steel, aluminum, wood, plastic, and gypsum board for various home projects.

How to cut successfully:
1. Install pilot hole and hole saw
2. Align the drill bit with the cutting surface and rotate the hole in a clockwise direction.
3. Start drilling by cutting at a slow speed and maintaining a steady pressure.
4. Then the hole saw cuts the hole immediately.

Warm tips
1. Remove the spring from the pilot drill bit when drilling holes in materials thicker than 10 mm.
2. Keep the drill bit steady while drilling, otherwise the center bit may break due to excessive shaking.
3. Rotate the drill bit slowly when you start drilling, otherwise the center drill bit may break on the first use.