It should be kept at right angle to the wall surface

It should be kept less than 90 Degree angle to the wall surface

Rawl tool bit is to be properly fitted

By using correct size of rowl tool bit

2 single way & 3 two way

4 single way & 1 two way

1 single way & 3 two way

3 one way & 2 two way

7 Nos

10 Nos

12 Nos

14 Nos

1.0 m

1.5 m

2.0 m

2.5 m

1.3 m

2.0 m

2.5 m

3.0 m