... high stability, long life,low price DM650D1 Red Laser Module Characteriscics:High-quality laser diode,optical glass lens, driver ... . The products are widely used in the field of testing detection instrument, military equipment, laser medical equipment, laser ... ,12*45mm,14*45mm,16*65mmFocus: fixed / adjustablematerial of module housing : cooper / aluminumSpan of Life: 8000-10000hoursSpot diamension: ...