Scroll saw blades pinned Pinned blades 127mm (5') for a scroll saw. LENGTH: 127mm (5') between pins TPI: 25 PINS: Yes Application: The blades are manufactured to be used with scroll saws. There are various blade types available in the range with different teeth styles for different uses. A minimum pilot hole of 4.7mm is required for cut-outs. Take a look at the chart below to select the correct blade for the recommended material and thickness. Scroll saw blade selection chart: CODE TPI TOOTH APPLICATION + MAX. MATERIAL THICKNESS 42401 18.5 Skip tooth Very thin cuts in hard and soft woods. 19mm 40501 20 Regular Thin cuts in hard and soft woods. 19mm 41001 7 Hook Cut thick hard and soft woods. 51mm 41101 15 Regular General purpose blade for woods & plastic. 19mm 41201 10 Regular Fast cutting of hard and soft woods. 19mm 42003 9/5 Skip tooth Fast cut blade with reversed teeth for woods. 19mm 42701 25 Regular Fine cuts in aluminium, plastic, soft woods & veneer to 19mm   DEFINITION: TPI - Teeth per inch. The amount of teeth measured between 25.4mm Note: Some blades have reversed teeth for fast paced cutting. Take care when using these blades as the blades can lift up your project from the scroll saw table when cutting.