Never get caught without essential gunsmithing tools again. Complete 17-piece tool set, in a handy bench block. Contains the tools you need for quick field repairs: eight, fixed blade screwdrivers with parallel ground tips fit most gun screws; eight, non-marring brass pin punches and an 8 ounce brass hammer help provide safe removal and installation of the most commonly found assembly pins. Grace USA Bench Block Tool Holders are made out of 60 durometer Neoprene rubber. Neoprene rubber is a general purpose compound that offers excellent oil resistance and chemical stability, as well as vibration dampening.Neoprene will remain stable over a wide temperature range.