Item No.: SN505~SN532SNU500 have separate matched caps and bases,In larger sizes where plummer blocks are heavier,this split-block design eases installation. The block can be converted from fixed to float by adding or removing the locating rings. A variety of sealing options help protect against contamination for highly contaminated environment. Available in a variety of shaft sizes.Phone: +86-592-580 8851 / +86-592-580 7618Email: sales@ldk-bearing.com ; benjamin@ldk-bearings.com