“FD Grip” The No.1 earthquake-resistant rebar coupler in Japan, the highest seismic country,
for over 30 years.
TEL:+62-21-6471-2565 https://www.fujibolt.com/index.html
more progress. all 5 rows of cams are moving. only the first row of cams have set screws. all are old cam design, switching to a larger brass cam to avoid high spots where the set screws are located. also higher lift