Type

Std. Opening
Hole
mm(inch)

Qty. of Cutters

Pilot Hole （mini）
mm(inch)

Fishing Neck

Down Conn. API

I.D.
mm(inch)

OAL
mm(inch)

Weight with Cutters
(kg) approx.

Length
mm（inch）

Dia.
mm（inch）

Up Conn. API

KZ3-311

311(12-1/4)

3

246(8-1/2)

457.2(18)

203(8)

6-5/8REG

4-1/2REG

38.1(1-1/2)

1524(60)

360

KZ3-444

444.5(17-1/2)

3

266.7(10-1/2)

457.2(18)

241.3(9-1/2)

7-5/8H90

7-5/8REG

57.2(2-1/4)

1752(69)

550

KZ3-660

660.4(26)

3

444.5(17-1/2)

457.2(18)

241.3(9-1/2)

7-5/8REG

7-5/8REG

76.2(3)

1753(69)

900

KZ3-914

914.4(36)

609.6(24)

609.6(24)

241.3(9-1/2)

7-5/8REG

7-5/8REG

76.2(3)

1905(75)

1000

KZ4-914

914.4(36)

4

457.2(18)

457.2(18)

254(10)

7-5/8REG

7-5/8REG

88.9(3-1/2)

2642(104)

1540