NPL-16T Gold Line Low Base Pillow Block Bearing 5.56mm SSBM-Series mufflers are constructed with

SSBM-Series mufflers are constructed with 300-Series stainless steel materials

a spring loaded pressure plate (magnet armature) presses against the rotating discs

Large 10mm diamond rim

is the more aggressive of the two styles

STANDARD AND HEAVY DUTY SHANKS

NPL-16T Gold Line Low Base Pillow Block Bearing 5.56mm SSBM-Series mufflers are constructed withNPL 16T Mounted Cast Iron Two Bolt Low Base Pillow Block Ball Bearing 52100 Bearing Steel, Black Oxided Concentric Lock Features Powder coated epoxy cast iron housing with extended inner ring bearings Skwezloc concentric locking for near perfect concentricity Unique land riding retainer design provides superior pocket clearance that allows for 360 grease circulation around the rolling elements resulting in better retained and utilized lubrication