The Handler Collar & Bit Gag is a top tier, dual use piece of leather gear that we love for public training of our slaves at Kink.com! When close contact training is needed, use it as a collar. The Thick side disperses pressure and pull across a broader area of their neck, while the rolled leather over metal handle allows you to direct them.
If for some stupid reason they are vocally disobedient, turn the collar around and use the leather padded handle as a bit gag. Place it right in mouth, with the thick side bracing against the back of their head. Now your misbehaving sub will be drooling and wishing they never had been so bad to deserve such an aggressive bit shoved into their mouth!