504A-BV1.0/1.2 Stent used four gears(2.0 mode)drive,only diameter32*diameter40*diameter10 wire wheel can be installed dend. Aluminium casting feed frameType:504A-BV1.0/1.2casting feed frame without "P"504 is the code for wire feed frame we have 21,401,402,404,501,502,504,P504 serialD is the position of the handle (looked from the positive direction)"D"is the right handle,"E"is the left handle.A ...