Blades 493785 Price Each Blades Description Order Code Heavy duty HSS blade for heavy duty internal de- S60 burring in difficult to reach places 137-4069 Extra fine point HSS blade used for steel and alu- S101 minium 137-4080 Extra fine point HSS blade used for brass and S202 cast iron. For both left and right handed use 137-4081 HSS blade for 0.75mm radius or larger, holes S150 1.5mm diameter or larger 137-4098 3.2mm countersink blade. For use with the NB BC3200 handle and/or SN holder 137-4099 C12 90 , 12mm countersink for use with the C holder 137-4055 C20 90 , 20mm countersink for use with the C holder 137-4056 C30 90 , 30mm countersink for use with the C holder 137-4057 Single flute, 6.3mm countersink. For use with NB BC6300 handle and/or SN holder 137-4100 Single flute, 8.3mm countersink. For use with NB BC8300 handle and/or SN holder 137-4101 Single flute, 10.4mm countersink. For use with BC1040 NB handle and/or SN holder 137-4103 4mm triangular section x 85mm long Scraper Blade, ground both ends for prolonged life. For T80 use with the Adjustable Scraper Handle only 720-0468 7mm triangular section x 120mm long Scraper Blade, ground both ends for prolonged life. For T120 use with the Uni Handle only 137-4049 HSS 3mm Mini Scraper Blade. Most suitable for D50 miniature components 137-4058 HSS 3.2mm Internal Scraper Blade. Most useful D66 on cross holes 137-4109 Used in the Double Burr, cutting along the cir- N80 cumference of each face 137-4070 Used in the Double Burr, cutting along the cir- N80 cumference of each face. The N80 M42 blade is M42 used for stainless steel 137-4105 Similar to the N80 but ground as shown, to facili- N80K tate use in narrow keyways. The N80K M42 Blade M42 is used on stainless steel (2.5mm - 11mm) 137-4106 Square Blade for shallow keyways N70K 1.2mm - 8mm) 137-4107 Heavy duty blade for wide keywaysN70K 1.2mm - 8mm) 137-4107 Heavy duty blade for wide keyways N90K (3mm - 15mm) 137-4108