A chain wrench with a compact design allowing to tighten the filter by locating the chain around the filter and to turning with a 1/2D ratchet or 21mm spanner. This oil filter wrench is ideal for filters with a satin finish carbon steel adjustment head. Features and Benefits Chain wrench which allows for an easy and reliable removal of oil filters of up to 120mm diameter Compatible with a 1/2""D ratchet, power bar, extension bar or 21mm spanner Designed to remove filters that are awkwardly located The adjustment head of the chain wrench is consists of strong durable carbon steel in a satin finish