Miko Marine MAM 005 Underwater Magnet Barnacle Buster the IW12 has a durable Wire Brush the IW12 has a durable swing hammer impact mechanism with adjustable impact intensity from 250 to 1200 FT LBS of torque Rex 1 310 003 O ring 2 310 006 O ring 1 310 007 O ring 2 310 013 O ring 2 320 030 Washer 1 320 040 Regulator Mount Washer 1 510 008 O ring 3 510 010 O ring 3 510 011 O ring 1 510 012 O ring 2 510 013 O ring 1 510 014 O ring 2 510 015 O ring 2 510 029 O ring 2 510 260 O ring MAM 005 is also shipped with a keeper disk for further shielding *Refers to the perpendicular holding force when applied directly onto a clean mild steel plate of minimum thickness 30 mm