Four (4) clear medium round non-marking polyethylene vinyl feet with removable metal insert for extra strength. 
The dimensions are a little larger than 3/4 inch wide (.875) and a little larger than 1/4 inch (.312) in height - see below. 

These are high-quality polyethylene vinyl rubber feet. The durometer (hardness) is 84 shore A.   The metal insert center hole is .186 inches wide and accepts a #8 truss head bolt or #8 screw
The insert can be removed to accommodate a larger bolt/screw.
This item is perfect for small radio gear, cutting boards, electronics, crafts and
other items that require small rubber feet. Items are in stock and shipping is fast.

Quantity - 4
Color - Clear
Description -  Clear Medium Round Polyethylene Vinyl Non-Marking Rubber Foot
Height - .312 (little larger than 1/4 inch) or  7.937 mm
Top Width - .875 (little larger than 3/4 inch) or 22.225 mm
Tapered Bottom Width - .812 (little larger than 3/4 inch)
Removable Metal Insert Center Hole Size - .186 inch
Bolt / Screw Size  - Accepts #8 Truss Head or #8 Screw
Material - Polyethylene Vinyl
Durometer - 84 Shore A

REACH & RoHS Compliant - Restrictive of Hazardous Substances / Conflict Mineral Free / 3TG, BPA Free - Proudly Made in the USA.

I also sell this item in packs of 20, 50, 100 & 250
I carry a wide selection of round, square and rectangular
rubber feet all made in the U.S.A - Visit my eBay Store
Check my rating and bid with confidence. Thanks for looking.

SHIPPING INFO & COSTS
All items are in stock and usually ship the same/next day via USPS. First Class mail.
If you need it faster we can also ship it by 3-Day Priority Mail.

SHIPPING - UNITED STATES
FIRST CLASS MAIL SHIPPING VIA USPS - FREE
3-DAY PRIORITY MAIL VIA USPS - $6.99

INTERNATIONAL SHIPPING
FIRST CLASS MAIL SHIPPING VIA USPS - $10.99