Large Pneumatic Drill; Drilling; Loud Continuous Metallic Clanking, With Motor Noise, Two Times Medium Perspective.

Medium Pneumatic Drill; Spurts; Numerous Drill Bursts, Varying Lengths, Air Release / Motor Spin, Medium Perspective.

Small Pneumatic Drill; On, Steady, Off; Pneumatic Drill; On / Steady / Off, Isolated, Close Perspective.

Small Pneumatic Drill; Spurts; Numerous Grinder Bursts, Varying Lengths, Air Release / Motor Spin, Close Perspective.

Small Pneumatic Drill; Long Spurts; Numerous Grinder Burst, Very Long, Two Times, Air Release / Motor Spin, Close Perspective.