Chicago Pneumatic offers is their CP7830Q and CP7830HQ line of quieter 3/8" and 1/2" air ratchets. With adjustable noise level controls, these ratchets can run as quietly as 79 decibals without losing power. Additional features include outputs of up to 190 RPM and 90 PSI with a TriSpring ratchet head and overall tool design that's more balanced and lighterweight
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