BZ Replacement Shale Shaker Screen for Nov Brandt BZ Replacement Screen for Cobra or Venom Shaker Pretension frame shaker screen Compatible with NOV Brandt Cobra, King Cobra, Mini Cobra, Venom, LCM-2D, LCM-3D shale shaker or mud cleaner or mud conditioner. Mesh available in SS304 / SS316 stainless steel. Fine diameter mesh or coarse diameter mesh for different drilling formations. Pretension frame for bigger usable screen area, longer life, light weight and corrosion-resistance. Replacement Screen for VSM300 Shaker Pretension frame Shaker Screen. Compatible with VSM 300 shale shaker and mud cleaner with different screens for Scalping, Primary, and Secondary deck. Mesh available in SS304 / SS316 stainless steel. Fine diameter mesh or coarse diameter mesh for different drilling formations. Pretension frame for bigger usable screen area, longer life, light weight and corrosion-resistance.