COUNTER SINK BIT: HSS 5PC HOLE TYPE SET 2.5-25MM 90DEG

* This 6pc countersink bit set is manufactured from quality HSS-M2 * Range: 6.3, 8.3, 10.4, 12.4, 16.5, 20.5mm * Angle is 90 degree * Choosing the right Countersink * How to Choose the right Size countersink by diameter ! * A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole * Countersink diameter = 1.5 x bolt size (hole) diameter * Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375 * This equates to a 3/8” countersink * How to Choose the right size countersink by angle ! * Angle is based on the screw or bolt type being used * 82º is most common * Supplied in quality plactic case for safe storage

* This hole type countersink bit 4pc set * Manufactured from quality HSS-M2 for durability and long service life * Bit ranges are: 2-5mm 5-10mm 10-15mm 15-20mm * Suitable for countersinking or deburring * Angle is 90 degree Choosing the Right Countersink How to Choose The Right Size Countersink by Diameter A simple rule of thumb is to choose a countersink which is 50% larger than the diameter of the hole Countersink diameter = 1.5 x bolt size (hole) diameter Ex: For a 1/4-20 bolt, multiply the diameter (.250) x 1.5 = .375. This equates to a 3/8” countersink How to Choose The Right Size Countersink by Angle Angle is based on the screw or bolt type being used 82º is most common