BEAR.BUD. II W/AUTO CHECK 2/CDBEARING BUDDY II WITH AUTO CHECKAllows for quick positive visual check for lubricant level and internal hub pressure. Auto pressure control feature prevents overfilling and avoids hub seal damage.1980A is chrome/brass; 1980ASS is stainless steel. Diameter 1.980"."Accord...

Professional rebreather diving instructor Jill Heinerth helps divers navigate the complex, and sometimes intimidating world of rebreather diving. Providing clear, candid and straightforward information based on her decades of exploration and teaching experience, Jill leads readers through the histor...