[0814259] 9pcs 22-64mm طقم خراقات حديد صلب

Teeth: M3 high-speed steel, heat-treated, hardened to HRC 62-66

Body: CR-MO-V medium-carbon alloy steel, with a cutout, 1.27mm bare wall thickness

Hole saw height for 1-1/2" to 2-1/2" holes is 44.5mm, and for 7/8" to 1-1/4" holes is 49mm

Spot drill bit: 4341# HSS, heat-treated, polished white diamond, 1/4" (6.35mm) diameter

6 hole saws: 7/8" (22mm), 1-1/8" (29mm), 1-3/8" (35mm), 1-3/4" (44mm), 2" (51mm), 2-1/2" (64mm)

2 centering rods: 3/8" hexagonal rod with thread size 1/2-20UNF, 7/16" hexagonal rod with thread size 5/8-18UNF, black finish center drill is polished white

1 adapter: 5/8" to 1/2", black finish