Shelve support hardware

A home owner from Michigan says:
The originals in picture say RONTHOR NYC with a T under the round 1/4" diameter peg. Overall about 1 1/8 x 1/2 x 1/2. Probably 30+ years old. What is the replacement for these? Also is there a metal version or equivalent? Thank you.
Thumbnail of the uploaded file named shelve hardware.jpg
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Casey from SWISCO responded:

Hello

We carry two types of shelf supports that resemble yours. Take a look at the 32-305 and 32-329. Take note that they engage with a 1/4" hole to mount them. Thanks for posting! 

Profile view of 32-305
Profile view of 32-305

Detail of 32-305
Detail of 32-305

Profile view of 32-329
Profile view of 32-329

Detail of 32-329
Detail of 32-329

Choosing a Shelf Bracket
Choosing a Shelf Bracket
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