“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
A simple way to hold the crankcase pulley so that you can loosen or tighten it. No expensive hard to find tools required, just a chain and breaker bar.