Food grade, thread is 3/8" diameter with 24 threads per inch.
Posted by tchism on 7th Jan 2019
16 grm were also sent, the 1st i had ever used, used 1 right
away...2 23 mm tires, zip zap done...as if in a risk situation..
Posted by Tertyll A Walls on 13th Sep 2017
Could not find the threaded ones in stores anywhere. So glad I found Red Rock.