... from 14mm to 152mmTungsten grit tipped hole saw is to cut holes in concrete, bricks, cements, plaster, wood board, granite slab, etc ... , diameter from 33mm to 133mmTCT Core drill is professional to cut holes in the walls to put plugset and drill through the ... cutting depth: 70mm, max diameter: 152mmTCT hole saw is to cut holes in concrete, bricks, cements, plaster, wood board, granite slab, etc ...