3 tlg HSS Step good Bit good Set 4-12mm/ 4-20mm/ 4-32mm

Detailed Information About The Product:

Ideal for metal sheets, plastics, wood.
3 good sizes: 4 - 12 mm, 4 - 20 mm and 4 - 32 mm
, heat-treated, high-speed steel, complete polishing
Take the good of gooding by providing the right depth .
Dimension:
1:4 mm to 12 mm 9 steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm), 7cm (L)
2:4 mm to 20 mm 9 steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm), 7cm (L)
3:4 mm to 32 mm 15 steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm), 10cm
Note: When gooding the hardness and hole of larger diameter, the bit must cool, with cold water cool the gooding progress for 120 to 240 is extended for the processing of 6 mm and below the plate, the bits of high-speed steel material, gooding progress 120/ minute, gooding more than 20 mm, gooding progress not more than 400 RPM and water cooling.
Package:
3pcs good HSS goodral groove stage good with transparent plastic boxes set
Note: Light 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.
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