Please note (1) Spratt (Brun) Mastoid Curette 6 1/2" Oval Cups Size 6 (14.0mm) SKU G19-167 and (2) Spratt (Brun) Mastoid Curette 6 1/2" Oval Cups Size 5 (12.8mm) SKU G19-166 is on backorder and will ship once available.