cartridge specially fit powder actuated tool, it's absolute professional and good quality,very competitive price; cartridge specially fit powder actuated tool,we have every size and very colour cartridge,.27(6.8x11) single or with strip,green,yellow,red,black colour.25(6.3x10,6.3x12)single or with disc, green,yellow,red colour.22(5.6x15, high velocity)single, green,yellow,red,purple colour.22(5. ...