NSK Deep Groove Ball Bearings 6228 ,Single Row D=140 Hand Socket Set Vessel Air Impact Driver GT S6MLR Slim Shower Head Set Vessel Air Impact Driver GT S6MLR LOBSTER original adjustable angle wrench due to contact seal Speed capability Good Good Limited by contact seals Grease sealing effectiveness Good Better than ZZ type Slightly better than VV type Dust resistance Good Better than ZZ type (usable in moderately dusty environments) Best (usable even in very dusty environments) Water resistance Not suitable Not suitable Good (usable even if fluid is splashed on bearing) Operating temperature –10 to +110 °C –10 to +110 °C –10 to +110 °C Note (1) The above temperature range applies to standard bearings (DDU Type) Torque Low Low Higher than ZZ and VV types