DEC:4" Pulley
The pulley is made of 2 times 1.2mm cold rolled
steel riveted together,6 rivets proportionally spaced
lnner ring heat treated
Thickness:1.2mm Clamp:2.0mm finish:zinc plated
Parts used in garage door, overhead door, residential garage door, commercial garage door, industrial garage door, sectional garage door, rolling garage door, sliding garage door