What an amazing rigging block from DMM. Designed for use in the tree care industry when loads may be dropped into rigging with considerable impact forces. The combination of high quality materials and advanced production processes has ensured a rope friendly, durable and robust product. During design each Impact Block has gone through a thorough dynamic and static testing regime, the end result is a highly functional product with an impressive strength to weight ratio.ï¿½It is also suitable from any industry looking for a light weight high strength load management pulley. It is available in two sizes.ï¿½ï¿½Maximum rope diameter: 20mmï¿½ï¿½View the attached data sheet for more information.