CLEAN sprocket with Shimano HG mounting system and 16mm base width. This sprocket is suitable for use on CLEAN 3P cranks or WAW AS30 cranks. Thanks to its 16mm wide base, the sprocket can replace the freewheel on the cranks without the need to define the remaining space on the cranks to maintain the chain line and proper tightening. The sprocket is made of very strong 7075 T6 aluminum alloy. Black anodized finish with laser engraved CLEAN logo.