Reverse Tooth blades with same performance as our skip tooth blades but with the added benefit of reverse teeth for a smooth, splinter free finish on top and bottom surfaces. Excellent blade for eliminating tear-out on birch plywood. Reverse Tooth Scroll Saw Blades are used for hand and machine sawing of wood, plastic and fibrous materials. Excellent for all types of hard and soft wood, plywood, etc. with a thickness of 1/4\" or more. These plain end blades are 5\" long, have skip style teeth for a smooth, sand free finishand special reverse teeth which provide a splinter free finish on top and bottom sides of the workpiece. Position blade with reverse teeth in bottom blade holder. Two reverse teeth should appear above the table surface to score the workpiece on the upstroke. Adjust feed pressure to prevent burning. No.2/0R - 28TPI (SA4400/2) - For fine fretwork up to 1/4\" thick. No.2R - 20TPI (SA4430/2) - For fine fretwork up to 1/2\" thick No.5R - 12.5TPI (SA4460/2) - For very tight radius cuts in hard wood up to 1/2\" thick and soft wood up to 3/4\" No.12R - 9.5TPI (SA4530/2) - Heavy duty for hard wood to 1 1/2\" thick and softwood 2\" thick