Reverse-tooth Blades: Reverse-tooth blades cut on the downstroke, minimizing chip-out on the face side of a workpiece when you must put the face-up during cuts. Making a sink cutout in a countertop calls for one of these blades. 6T, 8T, 10T: T means teeth count per inch of the jig saw blades. The less the teeth count per inch, the faster the seed of the cutting. The more the teeth count per inch, the smoother the will be. Excellent Performance: Jigsaw blades are made of high carbon steel, anti-, anti-rust, high hardness, not easy to break, , strong, and . They can provide precise and clean cuts. Our saw blades are compatible with most U-Shape Jigsaw blades, suitable for softwood, chipboard, plywood, plastic, aluminum, fibreboard, thin metal sheet, such as construction lumber with nails, aluminum plates, iron sheets, etc. cutting. Product Description 10 x 6T Jigsaw Blades 8 x 8T Jigsaw Blades 10 x 10 T Jigsaw Blades Product Name: Jigsaw Blades Set Colour:As Shown Material:High-carbon steel Package Contents: 1 set x Jigsaw Blades Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.