Description 1-1/2" Round bore, has rubber cushion. This item is a suitable alternative for the following: 852-GW209PPB22, 1927-11-0, 1927, 851-CDS209TTR6P, 851-SMA1927, 851-SMAGW209PPB22BR, CDS209TTR6P, SMA1927, SMAGW209PPB22BR