Galaxy foam cutter for Upholstery foam use only Cuts Perfectly Round holes in foam. Stainless steel material . length 4-1/2" Available size 1/2"=12mm. 3/4" =18mm. 25/32"=20mm. 7/8"=22mm. 1"=25mm. 1-1/8"=28mm. 1-3/16" = 30mm. 1-3/8"=35mm.1-1/2"=38mm. 2"=50mm. 3/4"=30 ligne We sell them individually or all sizes in a set. ( please check our listings). Cuts perfectly round holes in foam for your upholstery needs. Easy to use. Fits in any drill. ---------DO NOT USE IMPACT MODE DRILL----- Due to safety reasons, the foam hole cutters are not designed to be very sharp from the manufacturer. If the cutters are not sharp enough for your needs or it becomes dull after usage, simply sand the edge of the foam hole cutter. Make sure the cutter is circular after sanding. The cutter also requires lubricant like WD40, just spray the front of the tube to make it work for smoothly.