Drillpro 3pcs 1 4 Inch Hex Shank Hss Titanium Coated Step Drill Bit Set 3-12 4-12 4-20mm

Features this is the new hss steel large step cone drill titanium bit set hole cutter which is made from high quality hss steel and with the titanium coated to reduce friction and heat it is very suitable for using to cut holes in a variety of materials including steel brass wood plastic etc specification product nametitanium coated step drill bitbranddrillpromaterialhss high speed steelsurface treatmenttitanium coatedshank size1 4 hex shanksizes4 12mm 5 step 4mm 6mm 8mm 10mm 12mm4 20mm 9 step 4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm3 12mm 10 step 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mmquantity 1 pc x 5 step bit1 pc x 9 step bit1 pc x 10 step bit package included 1 pc x5 step bit1 pc x9 step bit1 pc x10 step bit

Features this is the new hss steel large step cone drill titanium bit set hole cutter which is made from high quality hss steel and