Comparison : Item # 820-32, Standard Nut Compression to Pipe Straight Needle Seat
Item # 820-42, Standard Nut Compression to Pipe Straight Needle Seat
Item # 820-44, Standard Nut Compression to Pipe Straight Needle Seat
Item # 820-52, Standard Nut Compression to Pipe Straight Needle Seat
Item # 820-54, Standard Nut Compression to Pipe Straight Needle Seat