... time, good service LOW VELOCITY TOOL: SDT-A 307 powder actuated tool(similar with DX350),fit DN,.300head ... pins and .27strip loads,450 powder actuated tool(similar with DX450),fit NK pins and .27 ... fit DN,.300 head pins and .22 single loads, HIGH VELOCITY TOOL: 660 tool fit 6mm or 1/4mm head pins ... , eye pins and .22 high velocity single loads, 106 tool fit 6mm head pins,eye pins and 6 ...