The arm is 1" thick - the clamp is designed to fit that arm.
Choose the Universal Clamp option if your grooming table is more than 1 3/4" thick.
If you are looking for the best grooming arm and clamp on the market...this is it!
GROOMING ARM SIZE: 17"W x 47"H x 1"Thick
NOTE: Do not purchase Universal Clamp(s) if a Standard Clamp will work. The reason is because the weakest part of the clamp is the screws, therefore if you are using a Universal Clamp with a 1" thick table then you would have over 2" of the screw out of the clamp and pressing into the table. This will allow any stress to be loaded on to the screws and possibly bend them.
Groomer's Helper's replacement tether in purple, for the Groomers Helper Professional and Starter sets.Great to have one on hand in case it is accidentally cut or chewed through by a dog. Includes proper size Allen Wrench and Instructions of how to change the tether