MSR Prefilter (SweetWater)
Stainless steel, 75-micron prefilter catches heavy particulate matter before it reaches the SweetWater® filter.
Filters from above, not from the stream bottom and is as effective in rushing water as in still pools.
Weight: 0.4 oz / 12 g
Diameter: 1.7 in / 4.3 cm
Length: 1 in / 2.7 cm
Cartridge housing: ABS
Screen material: Stainless steel