The bimetal hole saw is a heat-treated bimetal M42 saw band with sharp tooth shape, durable and good stability. The processing materials range from thin metal to wood, plastic, PVC, etc. The hole saw requires only 1 pass to cut the dowels these hole saws are ideal for jobs where high performance and precision are required. Excellent for cutting wood, plastic, machined metal, nailed wood,plywood, pipes and steel. High speed steel hole saw blade features impact and scratch resistant teeth. Soft spring steel creates a flexible material that allows the hole saw to absorb the impacts of work drilling holes in materialsdifficult to cut. Faster, smoother cutting without as much vibration as others thanks to its variable pitch teeth creates holes for pipe and tube installations, door lock installations, electrical conduit, pipesand antennas. Tines are electronically welded for spall-proof, shock-absorbing alloy bodies packed in individual boxes. Note: gazebo is included.