Product introduction: Rebar coupler protective covers are used to protect the coupler thread prevent from rusty or dirty scraps falling inside of it after putting on the vertical rebar before connecting with up threaded rebar ends, it is plastic covers for rebar couplers also can keep rebar coupler thread dry when it is rainy at working site.Product details:Name:Protective covers for rebar couplerRaw Material:PlasticSize:16mm/18mm/20mm/25mm/28mm/32mm/36mm/40mmPacking:By bags and   pallets packing or put on coupler one sideSample:Free existing   samples for checking dimension and qualityProduction time:Have stocks or   7-15 days based on different quantity after receive the prepaymentShipping Port:Xingang,Tianjin   Port,  Shanghai Port, China.Payment Terms:TT / LC