12 Hard Plastic Clear Wobble Wedges - Leveling Shims For Tables/Chairs Material:Plastic Head of bumper is 1/2"

Head of bumper is 1/2" in diameter

These adjustable nylon based 1-1/2" threaded stem glides may be the perfect solution for you

If you are interested in trying to use these glide caps as inserts the outside diameter is approximately 1-11/32" with an approximate height of 3/8"

It caps the furniture feet

12 Hard Plastic Clear Wobble Wedges - Leveling Shims For Tables/Chairs Material:Plastic Head of bumper is 1/2"Hard Wobble Wedges are tough and durable plastic shims supporting over 2000 lbs. These leveling wedges are particularly useful for fixing shaky tables on carpeting uneven concrete floors and patios. When leveling heavy restaurant tables and food service equipment Hard Wobble Wedge plastic shims are a must. Their rubber like texture creates a firm grip on slick floors and also reduces rattling sounds by absorbing vibration. Wobble Wedges are flexible