Hign-concerned Chemical:None Type:Garden Tool Parts Origin:Mainland China Features: *Compatible Models:The chain adjuster tensioner screw is specifically designed to be compatible with for Echo CS-400 CS400 CS-450 chainsaws. *Repalcement Parts:This chain adjuster tensioner screw kit includes 2 sets of screws, with reference numbers V651000001, V651000011, V203000110, C30900030, V3550080. *Adjustable Tension for Chain:This kit is used to apply adjustable tension to the chain of the chainsaw. It allows you to tighten or loosen the chain tension according to your needs. *Easy to Use:With the chain adjuster tensioner screw kit, you can easily adjust the chain tension of your chainsaw. *Note:Before purchasing, please check compatibility chart, part photos, part number above carefully to make sure it is what you need. Specifications: *Product Name:Chain Saw Chain Adjuster Tensioner Screws *Material: No *Size: No *Color:Black+Silver *Fitment:ForEcho CS-400 CS400 CS-450 *Number of Pieces:2 sets Package Content: 2 sets of Chain Saw Chain Adjuster Tensioner Screws Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.